Showing posts with label Contact Lens. Show all posts
Showing posts with label Contact Lens. Show all posts

Contact lens care regimen - Part2 | What should you not do with Contact Lenses

Contact Lens care regimen - What you should not do...


    Contact lenses are medical devices and directly used in the eyes, which should be used carefully.

What you should not do...
• Do not wear your contact lenses, if you notice any issue with your contact lenses such as eye-stinging, burning, itching, eye pain, comfort less than when the lens was first put in, abnormal feeling of something in the eye, excessive watering, unusual eye secretions, redness, reduced sharpness of vision, blurred vision, rainbows or halos around objects, sensitivity to light or dry eyes.

• Do not use oily soap/sticky liquid soap to rinse your hands, it's traces may remain in your palm and cause irritation after wearing the lens/lenses.

• Do never use any household products to disinfect your contact lenses (they can seriously damage your eyes).

• Do not wear your contact lenses for a longer period than advised.

• Do not sleep or take nap with contact lenses on.

• Do not handle contact lenses over washbasin or sink area as they may fall into and get contaminated.

• Do not reuse contact lens disinfecting solution for two days or more.

• Do not use tap water or filter (RO) water to rinse or store your contact lenses.

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• Do not dilute any contact lens disinfecting solution as this may get contaminated & reduces their effectiveness.

• Do not overnight store your contact lenses in tap water or distilled water. Contact lenses are not safe with all varieties of eye drops.

• Do not rub your eyes vigorously with contact lens, when you have worn them. But you can do a gentle rub of your eyes with a contact lens on.

• Do not splash water directly into your eyes when you have worn contact lenses.

• Do not use contact lens disinfecting solution if you are allergic to any ingredient of it.

• Do not use all variety eye drop over contact lens, without being advised by your practitioner (few eye drops ie. lubricants, rewetting can be used - as per recommended by your practitioner).

• Do not keep your contact lenses without it's liquid otherwise they will be dried (dehydrated), and they will change their size and shape? Due to this, you will find more discomfort in your eyes while wearing them.

• Do not touch disinfecting solution bottle tip or nostril with finger/s. Otherwise, the disinfecting solution will get contaminated.

• Do not expose disinfecting solution bottle directly to Sunlight or hot areas.

• Do not wear your contact lenses in the presence of noxious or irritating vapors/fumes, smoke, or dusty conditions. you may experience discomfort in your eyes if you do so.

• Do not allow any hair spray or other cosmetics aerosols vapors to come into contact with your contact lenses.

• Do not wear oil base eyeliner or other cosmetics on the inner side of your eyelids. Particles of cosmetics may be stuck over the contact surface and cause discomfort in the eyes.

• Do not use saliva to wet your lenses, it is not true that your own bacteria are safe. But this may cause serious eye infections also.

• Do not wear reusable lenses while swimming as they may get contaminated with contact of water but daily disposable contact lenses can be worn, and thrown away after swimming.

• Do not frequently switch disinfecting solutions from one to another without checking your eye care practitioner. Otherwise, this could cause discomfort in your eyes as ingredients are different in all disinfecting solutions.

Contact Lens Care Regimen - Part 1 | Contact Lens management | What to do with Contact Lens

Contact Lens care regimen

     Contact lenses are medical devices for which you need a complete and comprehensive eye check-up in which your eye care professional will assess the health of your eyes and find the correct power for nearsightedness (myopia), farsightedness (hypermetropia), and astigmatism. After check-ups of your eyes, your eye care professional will decide which contact lens will keep your eyes healthy and comfortable. Of course, regular eye examinations by your eye care professional are an important part of wearing a contact lens. Cleanliness is an important aspect of proper contact lens care and handling of your contact lenses. And here we recommend that you should always follow the instructions:


What you should do...

  • Thoroughly wash your hands with mild soap (or baby soap) to remove any traces of hand cream, dust, fluff, or dirt on your fingers, as these could end up in the lens and cause discomfort.
  • Dry your hands with a lint-free towel/cloth before insertion and removal of contact lenses to avoid tiny fibers (lint) getting on to lens surface.
  • Keep your fingernails short, smooth, and clean.
  • Spread cloth/sheet while insertion or removal of Contact lens/es so that they should not be lost over the floor.
  • Rub and rinse your lenses before insertion and after removal with the disinfecting solution recommended by the contact lens practitioner.
  • Clean contact lens cases after each use using fresh, sterile disinfecting solution/contact lens cleaner. 
  • Always insert and remove the same eye lens first, so that you do not mix-ups the right and left lenses.

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  • Rinse your Lens/es in your palm with the other hand’s index finger after making an angle of 30-45 degrees and the lens should be rubbed in ‘+’ sign or clock & anti-clockwise with 8-10 gentle strokes with a recommended solution – this process should be repeated twice. You can turn inside out only in soft contact lenses but can’t do in RGP (hard) contact lenses.
  • Before insertion of the lenses, you should Check that lens are not turned inside out (for soft contact lenses).
  • Now your contact lens/es are ready to insert.
  • After insertion and before removal of the contact lens/es – cover one eye and check the vision with opposite eye and do it for another eye also, by which eye injury can be avoided.
  • Rinse the lens case weekly once with cool boiled water or RO water with a toothbrush and mild soap (baby soap), when the lens/es are in the eye/s.
  • Contact lenses should always be stored in the contact lens case in a fresh recommended disinfecting solution regularly to remove the protein deposits, mucus, and film from the lens surface, even if they are not being used daily.
  • Disinfecting solution disinfects your contact lenses and protects them from microbial contamination and reduces the risk of an eye infection.
  • Disinfecting solution filled in lens case to soak the contact lenses also has a wetting and conditioning effect, which forms a cushion effect over the front and back of contact lens surface, and provides comfort immediately after insertion.
  • After removing your lenses from the lens case, empty and rinse the lens storage case with solution(s) recommended by the lens case manufacturer; then allow the lens case to air dry. When the case is used again, refill it with a fresh storage solution. Replace lens case at regular intervals.
  • Rigid gas permeable contact lenses should always be soaked in disinfecting solution for better comfort. Keep them in dry state if you are not using them for one week or more.
  • The disinfecting solution can be used within 75-90 days of opening the seal of the bottle and the remaining solution should be discarded after that duration.
  • Use disinfecting contact lens solution before the date of expiry marked on the bottle label or carton.
  • Apply the disinfecting solution bottle cap after every use to avoid contamination and evaporation.
  • After insertion of contact lenses in the eyes, you can apply only water-based make-up which does not deposit over contact lenses. If you want to remove the make-up then you should take out the contact lens first from the eyes, and then remove the make-up.
  • For the best safety, wherever you go carry your contact lens case and disinfecting solution with you. So that you can store your contact lenses in a lens case if needed.
  • If you experience any kind of eye discomfort, excessive watering (tearing), fluctuation in vision, and redness in the eye - remove your contact lens from your eyes immediately and consult your eye care practitioner.
  • Replace lenses if they become damaged, chipped-off, or scratched.

 

 

Contact Lenses with Plus Power in India

Contact Lenses with Plus Power in India

    Contact lenses are thin lenses that are directly placed on the front surface of the eye. Contact lenses are an ocular medical device used to correct vision or for cosmetic or therapeutic purposes by people worldwide. People choose to wear contact lenses to avoid wearing glasses, with which field of vision or peripheral vision increases. Contact lenses are preferred for cosmetic purposes, sports, and other outdoor activities. Contact lens wearers can also use sunglasses or goggles to protect them from bright light or glare. There are different types of contact lenses to correct nearsightedness or farsightedness. Farsightedness is corrected with plus power. 

Spherical Contact Lens with Plus power

Silicone Hydrogel - Daily Disposable

J&J Acuvue Oasys 1-day (Senofilcon A)
Base curve 8.5, 9.0     Diameter 14.3
Power range +0.50 to +6.00 (0.25 step) +6.50 to +8.00 (0.50 step)

J&J 1-day Acuvue Trueye (Narafilcon A)
Base curve 8.5            Diameter 14.2
Power range +0.50 to +6.00 (0.25 step) 

Coopervision Clarity 1-day (Somofilcon A)
Base curve 8.6            Diameter 14.1
Power range +0.50 to +4.00 (0.25 step) +4.50 to +6.00 (0.50 step) 

Hydrogel - Daily Disposable

J&J Acuvue Moist (Etafilcon A)
Base curve 8.5, 9.0     Diameter 14.2
Power range +0.50 to +6.00 (0.25 step)

Alcon Focus Dailies (Nelfilcon A)
Base curve 8.6           Diameter 13.8
Power range +0.50 to +6.00 (0.25 step) 

Alcon Dailies Aqua Comfort Plus (Nelfilcon A)
Base curve 8.7           Diameter 14.0
Power range +0.50 to +6.00 (0.25 step)

Silicone Hydrogel - Reusable contact lens

J&J Acuvue Oasys  (Senofilcon A) - (2 weeks)
Base curve 8.4, 8.8     Diameter14.0
Power range +0.50 to +6.00 ( 0.25 step) +6.50 to +8.00 (0.50 step)

J&J Acuvue Vita  (Senofilcon C) - (1 month)
Base curve 8.4, 8.8     Diameter14.0
Power range +0.50 to +6.00 ( 0.25 step) +6.50 to +8.00 (0.50 step)

Coopervision Biofinity  (Comfilcon A) - (1 month)
Base curve 8.6            Diameter 14.0
Power range +0.50 to +6.00 ( 0.25 step) +6.50 to +8.00 (0.50 step)

Coopervision Biofinity XR (Comfilcon A) - (1 month)
Base curve 8.6            Diameter 14.0
Power range +8.50 to +15.00 (0.50 step)

Coopervision Avira Vitality (Fanfilcon A) - (1 month)
Base curve 8.4            Diameter 14.2
Power range +0.50 to +4.00 ( 0.25 step) +4.50 to +6.00 (0.50 step)

B&L PureVision2 (Balafilcon A) - (1 month)
Base curve 8.6            Diameter 14.0
Power range +0.50 to +6.00 ( 0.25 step)

Alcon AirOptix Aqua(Lotrafilcon B) - (1 month)
Base curve 8.6            Diameter 14.2
Power range +0.50 to +6.00 ( 0.25 step)

Alcon O2 Optix  (Lotrafilcon B) - (1 Month)
Base curve 8.6            Diameter 14.2
Power range +0.50 to +6.00 ( 0.25 step)

Hydrogel - Reusable contact lens

J&J Acuvue 2 (Etafilcon A) – (2 weeks)
Base curve 8.3, 8.7     Diameter 14.0
Power range +0.50 to +6.00 (0.25 step) +6.50 to +8.00 (0.50 step)

Coopervision Proclear – (Omafilcon A) (1 Month)

Base curve 8.6            Diameter14.2
Power range +0.50 to +6.00 (0.25 step) +6.50 to +20.00 (0.50 step)

B&L Optima38  (Polymacon) - 1 year
Base cuvrve 8.4, 8.7     Diameter 14.0
Power range +0.50 to +5.00 (0.50 step)


Toric (Plus power) Contact lens

Hydrogel Toric - Daily Disposable

J&J Acuvue Moist for Astigmatism (Etafilcon A)
Base curve 8.5         Diameter 14.5
Spherical power range: +0.25 to +4.00 (0.25 step)
Cylindrical power: -0.75, -1.25, -1.75
Available Axis: 10, 20, 70, 80, 90, 100, 110, 160, 170, 180

Silicone Hydrogel Toric - Reusable contact lenes

J&J Acuvue Oasys for Astigmatism (Senofilcon A) - (2 weeks)
Base curve 8.6    Diameter 14.5
Spherical power range: +0.25 to +6.00 (0.25 step)
Cylindrical power: -0.75, -1.25, -1.75, -2.25, -2.75
Available Axis: 10 to 180 (10 degrees increments)

J&J Acuvue Vita for Astigmatism (Senofilcon C) - (1 Month)
Base curve 8.6    Diameter 14.5
Spherical power range: +0.25 to +4.00 (0.25 step)
Cylindrical power: -0.75, -1.25, -1.75
Available Axis: 10, 20, 70, 80, 90, 100, 110, 160, 170, 180
 
B&L PureVision2 for Astigmatism (Balafilcon A) - (1 month)
Base curve 8.9    Diameter 14.5
Spherical power range: +0.25 to +5.00 (0.25 step), +5.50 to +6.00 (0.50 step)
Cylindrical power: -0.75, -1.25, -1.75, -2.25
Available Axis: 10 to 180 (10 degrees increments)

Hydrogel Toric - Reusable contact lenes

B&L SofLens66 (Alphafilicon A) - (1 month)
Base curve 8.5            Diameter 14.5
Spherical power range: +0.25 to +5.00 (0.25 step), +5.50 to +6.00 (0.50 step)
Cylindrical power: -0.75, -1.25, -1.75, -2.25
Available Axis: 10 to 180 (10 degrees increments)


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Available contact lenses with Minus Power in India.

How to select a Contact Lens for your eyes? | Contact Lens selection

How to select a Contact Lens for your eyes?

    Contact lenses are thin lenses made up of polished plastic (hydrogel or silicone) material, that are directly placed on the front surface of the eye. Contact lenses are an ocular medical device used to correct vision or for cosmetic or therapeutic purposes by people worldwide. People choose to wear contact lenses to avoid wearing glasses, with which field of vision or peripheral vision increases. Contact lenses are preferred for cosmetic purposes, sports, and other outdoor activities. Contact lens wearers can also use sunglasses or goggles to protect them from bright light or glare. There are different types of contact lenses to correct nearsightedness or farsightedness.

    Today I am here with a new post on How to select a contact lens for yourself?

    The answer to this question is really very tough but in this post, I have made all my effort to make you understand how to make a good selection for your contact lenses. Hope it might be helpful to you!

    Contact lenses are a replacement of spectacles. After wearing contact lenses, a person can see as natural vision and the field of vision increases up to 99%. People can also wear sun shades too with contact lenses.

    Before buying any contact lenses there are some simple questions to ask. These questions will help you to decide which contact lens suits your need. So you need to ask these simple questions to yourself.

    First, you need to decide at what time you want to use your contact lenses. The next question should be asked that how many hours you want to use them. And finally, what is your budget to buy the contact lenses?

     If you ask these questions to yourself, definitely you can judge your choice of contact lens.

    But you should ask a few more questions to yourself like what is your digital screen usage? And how many hours you spend in AC? If you add these few more questions, then you can judge the best contact lenses for your eyes.

    Some people want to use contact lenses on an occasional basis while some others want to use contact lenses on an everyday basis. Some of them want to use them for a few hours while some of them want to use them for a maximum of waking hours.

    So, there are different types of contact lenses with different modalities of usage.

    If you want to use a contact lens only for party functions, sports activities, or sometimes while going out for shopping, etc. then a daily disposable contact lens will be the best option for you. These lenses comes single lens blister. You need not to clean or store them at all. Just open the blister of the contact lens and wear them and now you are ready to go. Hygiene and maintenance wise these lenses are most hygienic. Infection in eyes with these types of contact lenses is close to zero percent. If you are fond of swimming then these lenses would be best choice for swimming as these lenses can be discarded after swim.

    If your work schedule is not allowing you to take care of your contact lenses every day then a daily disposable contact lens would be advisable for you. You can put a pair of contact lenses in your eyes after taking bath in morning  and remove them before going to bed from your eyes.

    If you are willing to wear lenses for longer hours then silicone hydrogel daily disposable lenses are the best choice. These lenses are available from Johnson & Johnson, Bausch&Lomb and Coopervision – you can wear these lenses for up to 18 hours occasionally basis without hesitation.

    If you are willing to wear lenses up to 12 hours then hydrogel lenses is a good option. You can wear these lenses for up to 12 hours. These lenses are available from Johnson & Johnson, Bausch&Lomb, Coopervision and Alcon.

    If in case your contact lens usage is more than thrice a week and you find daily disposable contact lenses are out of your budget then it is better to prefer reusable contact lenses as expenses on these lenses become cost-effective.

    Again these lenses are available in silicone hydrogel and hydrogel material. So if you want to use lenses every day for up to 14 hours per day then silicone hydrogel lenses would be the best choice of contact lenses. But if you want to use lenses for up to 10-11 hours per day then you can select hydrogel material of contact lenses.

    If your choice of contact lenses is not available in daily or monthly disposable contact lenses then you can use conventional contact lenses. But these contact lenses should be used up to 8 hours per day.

    If you use hydrogel reusable contact lenses for a long time then hydrogel lenses are not the best choice. This type of lenses may cause oxygen-related changes in your eyes which can, later on, cause an eye infection.

    Finally, it is my personal opinion that you should use silicone hydrogel contact lens for whatever time duration you want to use so that your eyes will remain always healthy and your eyes will not face oxygen related issues (corneal hypoxia).

    Hopefully, after reading this post you might have selected your choice of contact lens. Be happy and infection-free after wearing contact lenses.

    Keep reading our other contact lens-related posts.

How to take care Contact lens related allergies?

Contact lenses (CLs) provide safe and effective vision correction if adequate lenses’ care is ensured as recommended. However, CLs’ wearers may have risk of eye infections if they fail to clean, disinfect, and store their CLs as instructions given.


    Contacts are composed of hypoallergenic materials. This means the materials themselves do not usually cause an allergic reaction. Instead, what causes it is a buildup of contaminants on the contacts. However, in rare cases, people can develop allergies to the actual lenses.
    Your eyes produce a protein that is deposited on your contact lenses while being worn. The protein is broken down when the lenses are stored in the contact lens solution. Over time, from daily usage of contact lens, the proteins can end up in your bloodstream via eyelids. Your immune system identifies these proteins as foreign invaders, similar to an allergen.
    Your body then begins creating antibodies and once these antibodies are enough in your bloodstream, the contact lenses become uncomfortable. This leads to an allergic sensation through a condition called giant papillary conjunctivitis or GPC.
    Sometimes contact lens user may find discomfort with CLs due to improper fitting of CL, uncorrected astigmatism, CL induced dry eyes, excessive digital screen usage and other allergies. Discomfort with contact lens can be identified by irritation, redness, bright light, pain in the eyes every time while lenses are worn.
    Sometimes contact lens solution could be the next cause of eye allergy because these solutions contains preservatives. Even proper cleaning of contact lenses may still leave traces of preservative. Thimersol is one of the main preservative in contact lens solutions - better to use Thimersol-free or presarvative-free contact lens solution.
    If still you have any kind of discomfort in your eyes, firstly to stop using contact lens. Prolong CL wear will increase discomfort, aggravate pain and eye infection.
    Better to consult with eye doctor for your eye discomfort, pain and infection.

Contact Lens and Eye Allergies - Reasons

Contact Lens and Eye Allergies

 The option to correct a refractive error (vision correction) is spectacle, contact lens, or refractive surgeries. Each of those choices has its advantages and disadvantages downside. 

Spectacles are the foremost commonly used for refractive correction. All three types of corrective choices for refractive error are simply offered in developing and developed countries. Though, the selection varies from the individual affordability, place, and nature of work, profession, socioeconomic status, and hobbies. 


Of those corrective options, contact lens has been playing an important role in providing vision to the countless users worldwide with several advantages like comfort, convenience, quality vision, wider the field of view, and different optical advantages over spectacles. Apart from the natural look it also opens the door for an unlimited selection of sunglasses.


Contact lens penetration in India was reported as ~5.5% of the target population 18 million. This can be considered low compared to other Asian countries like China (17%), Korea (16%), Malaysia (25%), and Singapore (35%). 


The contact lens provides safe and effective vision correction if proper lens care is taken care of as recommended by the practitioner. However, contact lens wearer may have a risk of an eye infection if they fail to wear, clean and disinfect, their contact lens as per instructions directed.


The phrase ‘allergic reaction’ could be causing up images of hives or the sudden sensation of restricted airways, but did you recognize that an allergy can develop slowly? After all, you will gradually become allergic to belongings you use every day, like your soap, favorite beverage, or maybe your contact lenses.


If you develop an allergy with contact lenses, you’ll first notice some itching and irritation. If the condition is not taken care of promptly then feeling of heaviness within the eyelids, redness, swelling, and discharge may develop.


As your eye responds to the contact lens, inflammation causes small bumps formation under the eyelids called papillae. The bumps are visible when a doctor inverts the eyelid to have a glance. When these bumps continue to enlarge - and that they can get as big as a millimeter each called giant papillary conjunctivitis - the condition worsens and your eyes become very sensitive to bright light and contact lenses. 


So don’t get frustrated – It is possible that you are allergic to your contact lens material (if hygiene and disinfection is proper) or maybe you are allergic to any ingredient of contact lens solution.

  
How to take care of contact lens allergies

Which Color contact Lens is Good for Eyes? | Color Contact Lenses

 Color contact Lenses

Friends, Hope you all are doing well.

Many friends want to show themselves different in social events and stage programmes. They usually use color contact lens to change their eye’s appearance which allow them to look cosmetically unique in parties or in stage program.

So today I am here with my new post about color contact lenses. Color contact lenses improve a person’s appearance cosmetically.

So you may like this post and I guarantee this post will definitely guide you to select a good color contact lens for your eyes.

Anyone of us can use color contact lens and change our eyes color cosmetically.

Color contact lenses are easily accessible in the market.

Friends, you may not know that color contact lenses are having a very narrow range for selection. Only few brands are available in India. Currently in India, only Bausch&Lomb (B&L) and Alcon are leaders in color contact lenses. Earlier time Alcon color lenses were known as CibaVision. But you should purchase these color lenses from genuine place.

People usually use Color contact lens while attending parties, functions, and stage programs.

At earlier times only hydrogel color contact lenses were available in the market which was not good for long-wearing hours. With these lenses eyes usually receives less oxygen which may impact on the eye’s health.

But now silicone hydrogel color contact lenses are available in the Indian market which can be used for long wearing hours with lesser impact on the eye’s health. These contact lenses are made with pigmented molecules due to which eyes receives good amount of oxygen.

Currently in India, only Bausch & Lomb (B&L) and Alcon are best brands in color contact lenses. These two brands are multinational brands providing different varieties of color contact lenses. Some color contact lenses are available from local brands in the Indian market at attractive prices as well which may not be good for your eye’s health.

Bausch&Lomb is having Optima NaturalLook and Lacelle range in market with different colors.

Bausch&Lomb Lacelle color contact lenses offers two and three-tone of color contact lenses. In Lacelle category, only the Premium and Circle range comes with plano and minus power up to 10 dioptres and other Lacelle range comes with plano means zero number.

Alcon is having FreshLook and AirOptix color range.

These lenses are available in plano power (means zero number), minus power up to 8 dioptres and some color contact lenses are available in plus power up to 6 dioptres in FreshLook range only.

If you are planning to purchase higher minus power or plus power then your color contact lens range becomes very limited and very few colors are available.

Plus power color contact lenses are having very limited range with FreshLook ColorBlends only. In color contact lenses, wider range of plus power is not available and cylindrical or astigmatism powers are not at all available in India.

Alcon FreshLook range color contact lenses are printed with a combination of colors and that's the reason these lenses provide less oxygen to the eyes and can be worn up to 8-10 hours. But Alcon Airoptix colorblends comes with pigmented molecule due to which eyes receives good amount of oxygen

Silicone hydrogel color contact lenses can be used on an everyday basis which does not impact much on the eye’s health.

Hydrogel color contact lenses are good for occasional wear with any brand. Hydrogel color contact lenses are available in monthly disposable and daily disposable also. Daily disposable color contact lens is available from Alcon FreshLook oneday only.

Any time daily disposable contact lenses are the best option for occasional wearer where you need not worry about care regimen at all.

Pure hazel, gem stone green, gray and, honey are common colors person are using

With color contact lens make up can be applied during wedding and festival

During pandemic time daily disposable contact lenses are best choice.

Contact lenses should be worn under the direction and supervision of an eye care professional.

Myopia - How to correct

Myopia correction options
 
 Myopia or Nearsightedness is a vision condition in which a person can see near clearly but have difficulty seeing far objects (ie watching TV, a board in the classroom, while driving, etc).
   If the eyeball size becomes bigger or cornea (black eyeball) is more curved than normal, it causes myopia. The exact cause of myopia is still unknown, but there is an increased chance to get myopia hereditary if one or both parents are having myopia. Even though the tendency to develop myopia may be inherited, but the actual development of the eye may be affected by how a person uses his or her eyes. If someone spends more time reading books, intensive usage of computers and digital screens, or doing continuous near work for a long time may progress myopia rapidly.
   Generally myopia occurs in school-age children due to continuous growth of eyes and progresses until about age 20-21 years. Myopia may also develop in adults due to visual stress, during pregnancy, and health conditions such as diabetes.
Myopia may occur due to environmental factor or other health issues:
• Some persons may experience difficulty seeing far objects in dim light or night time due to low light makes it difficult to focus properly or increase pupil size in dark conditions allows more unfocused peripheral light rays to enter in the eyes.
• Some person who does excessive near work continuously without maintaining breaks may find difficulty to focus far objects in pseudo-myopic condition, caused by overuse of eyes’ focusing mechanism. However constant visual stress may lead to a permanent decrease in distance vision over some time.   
   An early indication of developing cataracts or change in diabetic level or during pregnancy may have symptoms of myopia.
Myopia can be corrected with glasses, contact lenses, surgically, and vision therapy for people with stress-related myopia.
Eyeglasses are the primary choice of myopia correction. Depending on the amount of myopia you may need to wear glasses for all the time for watching TV or driving a car.
   Contact lenses, are the next choice of myopia correction, provides a clearer and wider field of vision than glasses. Contact lenses are worn directly over eyes but need hygiene and care maintenance.
   Ortho-K or Corneal refractive therapy (CRT) is the other nonsurgical option to correct myopia. People with mild myopia can be obtained a clear vision for most of their activities. In this procedure, a series of specially designed rigid contact lenses placed over the cornea during sleep or overnight to gradually reshape the curvature of the cornea. The lenses are placed on the cornea to flatten it centrally.    

Which COntact Lens is good for Eyes | Contact Lens types

There are two general categories of contact lenses – soft and rigid gas permeable (RGP).

 Soft Contact Lenses

 Soft contact lenses are made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adapt and adjust and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide even more oxygen to your eyes while you wear your lenses.

 Rigid Gas Permeable (RGP) Contact Lenses

 Rigid gas permeable contact lenses (RGPs) are more durable and resistant to deposit buildup, and generally give a clearer, crisper vision. However, they are not as comfortable as soft contacts and it may take few weeks to get used to wearing RGPs. They tend to be less expensive over the life of the lens since they last longer than soft contact lenses. They are easier to handle and less likely to tear.

 

Advantages and Disadvantages of Various Types of Contact Lenses

 

Lens types

       Advantages

       Disadvantages

Rigid gas-permeable (RGP)

Made of slightly
flexible plastics that allow oxygen to pass through to the eyes.

  • Excellent vision
  • Needs adaptation period
  • Correct most vision problems
  • Easy to put on and care for
  • Relatively long shelf life
  • Available in tints (for handling purposes) and bifocals
  • Available for myopia control and corneal refractive therapy
  • Require consistent wear to maintain adaptation
  • Can slip off center of eye more easily than soft CL
  • Debris can sometimes get under the lenses
  • Require regular office visits for follow-up care

  

 

 

 

Daily-wear soft 

lenses

Made of soft, flexible plastic that allows oxygen to pass through to the eyes.

  • Very short adaptation period
  • More comfortable and little difficult to dislodge than RGP lenses
  • Available in tints and bifocals (multifocals)
  • Available in lenses that do not need to be cleaned
  • Great for active lifestyles
  • Do not correct all vision problems
  • Vision may not be as sharp as with RGP lenses
  • Require regular office visits for follow-up care
  • Lenses wear out and must be replaced in a timely fashion

 

 

 

Extended-wear

Available for overnight wear

  • Can usually be worn up to seven days without removal
  • Some lenses are FDA-approved for up to 30 days
  • Do not correct all vision problems
  • Require regular office visits for follow-up care
  • Could increase risk of complication
  • Require regular monitoring and professional care

 

Extended-wear 
disposable

Soft lenses worn for
extended period of time (usually one to six days), then
discarded. Lenses also available to wear from one to 30 days.


  • Require little or no cleaning
  • Very less risk of eye infection if wearing instructions are followed
  • Available in tints and bifocals
  • Spare lenses available
  • Vision may not be as sharp as with RGP lenses
  • Do not correct all vision problems
  • Handling may be little difficult

Planned replacement

Soft daily-wear 

lenses that are 

 replaced on a 

planned schedule, 

most often either 

every two weeks, monthly or quarterly.

  • Simplified cleaning and disinfection
  • Good for eye health
  • Available in most prescriptions
  • Vision may not be as sharp as with RGP lenses
  • Do not correct all vision problems
  • Handling may be little difficult
  • Could increase risk of complication
  • Require regular monitoring and professional care