Showing posts with label Computer. Show all posts
Showing posts with label Computer. Show all posts

Computer Usage Tips and Tricks - Everyone should Follow

Computer Usage Tip and Tricks


    In the present era of globalization, the computer has become an important device everywhere. The advent of technology has caused a lot of change in human life. Computers and their uses grew rapidly and widely throughout the world. It helps to resolve problems that human life encounters in daily life.

    The impact of computer usage on our life has been identified as saving money, time, and effort. In the last few decades, the computer has been recognized as the most life-changing and successful invention in solving problems in human life. Today, everywhere you can find computer usage in business. Look at the educational sector, health, transportation, or communication sector, we can see the influence and application of computers. It is tough to flourish a business without adopting computer usage in this modern world. The computer has intervened in every sphere of human life from such as TV shows, Supermarkets, Hospitals, Railways, Matrimonial, Share Tradings, Online Purchasing, Banking, Sports, Traffic controls, Security Surveillance Systems, Job Recruitment, Robotics, Machine Learning, Artificial Intelligence, etc. are a few of them. Computer and smartphone can bring people closer together and facilitate contacts between them using a mobile phone, Email, Chatting, Videoconferencing, and Social media. All this means that a lot of time is spent in front of a digital screen. In everyday life, we can’t live without digital screens and our screen usage has been increasing day by day. Although this is an advantage in the world of technology that our work is getting done faster and easier, still we need to be very careful of unintended consequences.

    But as the saying goes, too much of a good thing can be bad – especially for our eyes. Even with constant exposure to digital screens, most people are unconscious of the unpleasant effects of prolonged digital technology use on their eyes.

    Many individuals may experience visual discomfort while viewing digital screens for larger periods. Staring at digital screens of laptops, computers, tablets, cellphones, TVs, smartwatches – affects your eyes so seriously that health experts have coined the term “Computer Vision Syndrome (CVS)”. Today the increased symptoms associated with CVS affect millions around the world regardless of age or occupation. Due to the high usage of electronic digital devices for an extended period, a couple of things occur which increase the likelihood of CVS symptoms which is also known as digital eye strain:

• Eyestrain
• Itching or rubbing of eyes
• Burning sensation
• Watery eye
• Headache
• Focus difficulty
• Blur in vision for distance and near
• Shadow in vision (double vision)
• Sensitivity to light   
• Dryness in eyes

You may like to read about:

"How to select a Contact Lens for your eyes?"
"Spectacle Frame Selection Guide matching to Your Face"
 

    It’s not possible to stop staring at screens altogether, but, fortunately, there are multiple measures you can take to reduce your risk of Computer Vision Syndrome and keep your eyes healthy. Everyone should get started by a healthy diet that contributes nourishment to eye health. Here are few tips to protect your vision and keep your eyes fresh and focused when you’re using screens.

    Healthy food and a balanced diet take care of your health and eyes as well. To maintain good health of your eyes, you should include Vitamin A & betacarotene, Vitamin C, Vitamin E, Lutein & Zeaxanthin in your diet.

Tips and tricks:

• Blinking of eyes: In normal conditions, the human eye blinks 15-17 times per minute. However, when you look at a digital screen and at that time brain also focuses on a screen, it can make you forget to blink your eyes, and the blink rate reduces up to 6-7 times per minute. Every time you blink your eyes, you spread a layer of tears over your eyes so your eyes are moistened. So less eye blinking means your eyes get less moistened which leads to dryness or sore eyes.

Computer Usage Tips and Tricks

• You use unfavorable angles: In normal conditions, when we read printed text or books, you normally look down to read them, but when staring at a screen the eyes are usually focused straight ahead. When looking down while reading, your eyelid covers more of your eye than when you look straight on. This means, looking at a screen with a straight angle causes more opening of eyes and exposes more of your eye to the air’s drying effects. This unfavorable eyelid positioning, together with a reduction in blinking, leaves you with uncomfortably dry or sore eyes and even visual fatigue. So digital screen should always be 10-15 degrees lower than your eye level.

• Get too close for comfort: You may have already noticed that when you are reading on your smartphone, you usually hold it closer to your eyes than you would with traditional printed text. And you are not the only one. This means that your eyes are forced to look at close ranges by having to almost turn cross-eyed, which tires out the eyes. Sometimes you use your smartphone to read in sleeping posture, which means you hold it close to your eyes which causes more eyestrain.

• Eye Strain: Continuous looking at the digital screen and reduced eye blink rate leaves you with uncomfortable dryness in your eyes. So looking at green plants kept at a far distance for a few seconds or minutes at intervals of 15-20 minutes will soothe your eyes.

• Dim light or low light for comfort: Sometimes you prefer to use the digital screen in dim light or no light conditions but this causes a lot of eye strain. Like this, the digital screen light enters into the eye, and due to reduced blink rate too - eyes and brain feel more tired. Due to this, you might experience heaviness in your head or uncomfortable while working with a screen.

• Room light or external light reflections from your digital screen should not come into your eyes while working in front of the digital screen.

• The luxury place for work: Most computers need cooling to function well but Air Conditioners (ACs) suck moisture from the air in that area. When you work in AC, it sucks moisture and water content from the body which doesn’t help in blood circulation and doesn’t keep your skin nourished. So, you should avoid AC vent direction towards your face and body wherever you are using a digital screen. In the AC room, your eyes’ moisture evaporates faster and causes dryness and soreness in the eye.

• As you feel tired after some time working with a digital screen, you should be taking a break every 1-2 hours during work. Taking healthy refreshments during the break will make you more refreshed as well as relaxed. Like this, you can work with a digital screen for a longer time. Along with refreshment, every few minutes your water intake also is very important.

• Digital screen comfort: Most of us prefer to use cellphones more frequently as this device is easier to use and can be carried easily but due to the smaller screen, the font size of the text remains smaller. Keeping focus on a screen to stare at a small-sized text, can make your eyes more painful. In such a scenario bigger size screen will reduce eye strain, and you’re not struggling to see the screen.

• Continuous working and watching videos on a cellphone can cause eye pain, headache also.

• Eye-related Headaches: Headaches are the next most common negative effect of your eye’s overexposure to digital devices. When you stare at a digital screen for long period, the eyestrain that occurs often results in tension-type headaches. This is because the darkness of the text, contrasted against the bright screen, makes your eyes work harder to focus and results in muscle spasms at the temples.

    Unquestionably, technology makes our lives easier, more efficient, and more enjoyable. But given the side effects of overexposure to smartphones, tablets, laptops, and other LED-emitting devices on your eyes, it is important to take a step away from electronics every once in a while.

    There are certain types of protective items that you can put on screens, such as filters, to cut down on glare, which can also help reduce eye strain.

    Whenever you experience discomfort in your eyes then tightly close your eyes and open them as this will give relaxation to your eyes and tears will spread evenly all over the eye.

    Most of the time, you experience a lack of time and keep continue using digital screens for your work till before going to bed due to this you may experience eye strain, lack of sleep. So if you reduce digital screen usage before going to sleep will make your eyes relaxed and with good sleep.

    Doing simple things such as adjusting the brightness of your devices and the distances at which you view them can decrease your eyestrain, dry eyes, sensitivity to light, etc.

    Use technology wisely, and your eyes will thank you.

Online teaching could make kids vulnerable to Corona Virus

Online teaching could make kids vulnerable to Corona Virus



 In olden time kids were usually read books and was spending lesser time to screen (includes TV,  computer, etc). In the past few years teaching kids is not remaining same as earlier.

In the recent past, online education is rapidly increased due to competition among children. Most children take online classes due to nuclear-family as both parents go to work and parents can’t take them to coaching classes. Kids are spending lesser time in outdoor activities (lesser exposure in sunlight) as both parents are not having sufficient time to spend with them. Teachers also give them more creative activity as homework so kids use computers or mobile to search mostly.

Eye experts are informing parents of the dangers of increased digital screen-time on their children’s eyes due to online classes. Due to which children are at the risk of myopia (near-sightedness), dryness and redness of the eyes and disrupted sleep patterns. Dryness of the eyes can damage to the ocular surface (front surface of cornea) and could even make patients more susceptible to contracting COVID-19.

If someone use digital screen (including mobile, tablet, computer, laptop etc) and spending average 6-12 hours per day then their blink rate reduces along with that they could have symptoms of gritty sensation, itching, redness and dryness in the eyes. “When a person blinks, tears are liberated through tiny pores which lubricate the eye.

So kids also have lesser blink rate, pink eyes, and dryness of eyes while using screen and sometimes they are not expressing in front of parents. Most families may not have laptop or computer with them so mostly kids are taking classes in mobile phone.

“The patient can become vulnerable to catching an infection when their ocular defence mechanisms are down. Conjunctivitis is a common presentation among Covid-19 patients, indicating that people with dryness issues in their eyes are at risk of contracting the infection. As they touch their eyes due to dryness and irritation, and eyes are at risk of contracting the infection.

Why we are more sensitive to smart phone or tablet screen? Why we should restrict small screen usage?

1. Smart phone and tablet screen size is smaller than laptop or computer screen.
2. Smaller screen size means smaller font size in mobile and tablet screen.
3. Digital screen (mobile and tablet) is having sensors due to which screen brightness keep fluctuating with lighting conditions.
4. Mobiles, tablets and laptops screen usually have glossy screen where light reflection may occur but computer monitors are not having glossy screen.
5. Laptop and computer monitors do not have sensors to change the brightness and contrast automatically.
6. Good thing: mobile and tablets are more handy - whenever or wherever you want to use them, press the button and screen get on within a second.
7. Laptops are bulky; relatively screen size is bigger than a tablet but takes time to boot. A laptop has a glossy screen due to that reflection occurs.
8. Computers need more space and computer screen size is definitely bigger in all screens and takes time to boot. There are no sensors to change the brightness and contrast automatically and there is no glossy screen in monitor.

 Eye specialists advise parents to exercise caution by restricting screen time for children and incorporate regular breaks during class work.

Children who aren’t getting enough sunlight or change of scenery were at high risk of developing myopia or progression of myopia (worsening of nearsightedness). “Increased screen time will also lead to disruptions in their sleep patterns.” Eye specialist recommends an age-bracket approach to restricting screen time for children. “It is important that the number of teaching hours should be reduced greatly. If a child used to have eight hours of classes at school, the number of online hours cannot be of the same length.”

Computer use for children should be as follows (if needed):

-First standard classes should not be conducted online at all.
-Second to fifth class online classes should be 2-3 hours per day with the break of 30 minutes and parents should be involved for homework through email or Whatsapp.
-Sixth to eighth class online classes should be 3-4 hours per day with the break of 30 minutes and parents should be involved for homework through email or Whatsapp.
-Ninth to twelfth class online classes should be 4-6 hours per day with the break of 30 minutes and parents and teachers should be involved for homework through email or Whatsapp.

 Parents should be counseled that the kid should have some snacks, drink water and focus far objects during the break time. Room illumination should not be very bright or dull (semi dark) at the time of screen usage. Kids should not use screen in sleepy position and close to face. Parents should insist on kids to make book-reading habits. Book reading should always be in good illuminating room and sitting position. Books, mobile, and tablet should be kept at 30-35 cms distance from eyes. Computer monitor should be at least one hand’s-distance (50 cms) from eyes.

 If kids are getting any kind of discomfort in their eyes; they should:

1. Avoid excessive screen usage and eye rub.
2. Take water wet cloth and put it over closed eyes.
3. Frequent blinking during screen usage time.
4. After online classes kids should close their eyes and give rest to their eyes for one hour.

Children should follow computer vision syndrome (CVS) rules means take a 20 second-long break after every 20 minutes of screen time, and focus at something located 20 feet away.

Lubricating eye drops could be administered during the day to facilitate moisture on eye surface.

If kids rub their eyes then there is a risk to change the eyeball shape and glasses power may increase. Eye rubbing could sometimes lead as an eye allergy.

How can computer cause back pain?

 How can a computer cause back pain?

A survey released by the National Institute for Occupational Safety and Health (NIOSH) showed that approximately 20 percent of computer workers have musculoskeletal disorders.

Computer vision syndrome (CVS) can be define as “complex of eye and vision problems related to near work that are experienced during or related to computer use.” And this condition most often occurs when the viewing demand of the task exceeds the visual abilities of the computer user. The symptoms can vary but mostly include eyestrain, headaches, blurred vision (distance or near), dry and irritated eyes, slow refocusing, neck and backache, light sensitivity, double vision, and color distortion. 

It is most often said that “the eyes lead the body.” 

Nature has made our visual system so dominant that we alter our body posture to accommodate any deficiency in the way we see. 

In many office situations where the vision of a worker is compromised and they must adapt their posture to ease the strain on the visual system. If an older worker is using single vision reading glasses, which are designed for a 16-inch viewing distance, they must lean in toward a screen that may be 20 to 25 inches away in order to clear the image. If the same worker is using traditional bifocals, which are designed to see the near object in the lower visual field, they must tilt their head backward and lean forward to put the viewing section of the lens into proper position to see the screen. If a computer worker is most often viewing hard copy that is off to one side, they might need to keep moving their head back and forth to view the screen alternatively with the hard copy. This will also lead to neck discomfort. They will continually alternate their viewing gaze between the keyboard and the screen using head movements, which can cause neck and shoulder fatigue.  

These and many other situations are all too common in the office environment and cause excessive postural accommodations that lead to the symptoms of neck and back discomfort. Researchers found that doing computer work for three hours contributed not only to eye muscle fatigue but also muscle pain in the head, neck and upper back regions. One of the main reasons for these problems is the setup of the workstation — most often the position of the monitor. All too frequently the monitor is placed either on top of the Central Processing Unit (CPU) or on a monitor stand. This places the screen in a position where the user must look either straight ahead or actually upward in their gaze.

Computer also can cause headache

The Computer also can cause headache

    Most research indicates that computer operators report more eye-related problems than non-computer office workers. Researchers have been noticed that visual symptoms occur in approximately 70-85% of computer workers. A survey released by the National Institute for Occupational Safety and Health (NIOSH) showed that approximately 20% of computer workers have musculoskeletal disorders.         

Computer vision syndrome (CVS) can be defined as “complex of eye and vision problems related to near work that are experienced during or related to computer use.” And this condition most often occurs when the viewing demand of the task exceeds the visual abilities of the computer user. The symptoms can vary but mostly include eyestrain, headaches, blurred vision (distance or near), dry and irritated eyes, slow refocusing, neck and backache, light sensitivity, double vision, and color distortion. In medical term eyestrain also called asthenopia which is the subjective complaint of uncomfortable, painful, and irritable vision. Asthenopia can be caused by some underlying conditions such as focusing spasm, different vision in each eye, astigmatism, hyperopia, myopia, excess light, voluntary focusing, eye coordination difficulties, and more. 

Headache is the most difficult malady to diagnose and treat effectively. There are numerous types of headaches and it can be caused by a number of different conditions.   

Visual headaches most often occur toward the front or sides of the head (there are a few exceptions to this); occurs most often toward the middle or end of the day; do not appear upon awakening; do not produce visual auras of flashing lights; often occur in a different pattern (or not at all) on weekends than during the week; can occur on one side of the head more than the other; and bring other more general symptoms. It is necessary to elicit the time of onset, location of the pain, frequency, duration, severity, and precipitating factors such as stress, certain foods or medications to distinguish the type of headache. Associated signs and symptoms such as nausea, vomiting, light sensitivity, and noise sensitivity should also be told to the doctor. 

Many times a worker complains of a migraine headache. However, migraines are a very specific type of headache and have an organic, not visual, cause. There is no clinical diagnostic test to establish the presence of a migraine headache. 

Computer workers most likely get tension-type headaches. These can be precipitated by many forms of stress, including anxiety and depression; numerous eye conditions, including astigmatism and hyperopia; improper workplace conditions, including glare, poor lighting, and improper workstation setup. These types of headaches are mild to moderate in intensity, often occur on either or both sides of the head, are not aggravated by physical activity, develop during the early to middle part of the day, last from few minutes to the rest of the day, and are relieved by rest or sleep. Chronic tension headaches vary somewhat from this but have the same type of symptoms and occur much more frequently.


You may like to read this also:

How can a computer cause dryness in the eyes?

How can a computer casue back pain?

How can a computer cause dryness in the eyes?


If you are a Computer user; Spare few minutes

Introduction

Tear and tear film – A normal tear film coats the front surface of the eye and protects from the environmental contaminants and cleansing and flushing harmful chemicals.

Tear film provides lubrication and wetting of the front surface of the eye by a blink and makes the surface of the eye smooth and clear tear film consist of 3 layers (inside to the outside) – these are mucus, watery and oily layer. Inner or mucus layer enable tear to ‘stick’ to the surface of the eye. Middle or aqueous layer accounts for the most of the tear film, cleanses the eye and washes away foreign particles or irritants. This layer provides oxygen and various nutrients to the eye surface. The outer or oily layer is very thin and floats on the surface of tear film, prevents evaporation of tear film.

•Eyelids are curtains of the eye and also important in maintaining tear film. Eyelids functions as a wiper – spread tears over the surface of the eye.


What is computer vision syndrome?
As computers became a part of our everyday life, most of people are experiencing a variety of eye-related symptoms related to computer use. These ocular complaints occurring as a result of operating a computer either singly or in combination - are collectively referred as ‘Computer Vision Syndrome’ (CVS).

Eye related complaints on computer use
It is estimated that approximately 90% of the peoples are using computers everyday for more than 3 hours – may experience eye strain, tired eyes, burning sensation, irritation, redness, blur in vision, intermittent blurriness, watery eyes, double vision (ghost images), dryness, grittiness or heaviness, after an extended period of time.

Causes for dry eye on computer uses:

Age – Tear production normally decreases with age. Although dry eye can occur at any age in both gender.

Environmental factor – The eye surface is very sensitive to drying and chemical imbalance from environment factors (pollution, office hazards such as dry air, ventilation fans, airborne paper dust, laser and photocopy toner).

Reduced blink rate – Most of the individuals normally blink approximately 12 – 15 times per minute. A reduced blink rate contributes a poor quality of the tear film on the eye surface. The blink rate at the computer is significantly less than the normal.

Increased exposure – The reading of text on paper is normally performed while looking downwards. This result – eyelids cover a substantial portion of the front surface of the eye (minimizing the evaporation of tears).

Systemic disease РVarious systemic disease like Sjögren syndrome, rheumatoid arthritis lead to a decrease tear secretion and cause dry eyes.

Medication – There are several medication contributing to ocular drying.

Contact lens – Contact lens comfort is highly dependent on the lubrication of the eye. Office personnel wearing contact lenses are found to be more likely to suffer a higher severity of ocular discomfort. The contact lens surface should skate along the eye and eye surfaces with minimal resistance. If the ocular surface is dry, the lenses dry and adhere to the upper eyelid during the blink. This “friction effect” from dry eye produces the discomfort.

Ocular condition – The most common disorder, blepharitis (dandruff like flakes in eye lashes), an inflammation of eyelids affecting the eyelid glands. The lack of an adequate lipid layer contributes to rapid evaporation of tears (water component of the tear film) causing discomfort.

Cosmetics – Oil based cosmetics applied on the inner surface of eyelid margins can block the opening of the oil secreting glands.

Ocular surgeries – Correction of refractive error by LASIK or PRK procedure causes decrease in tear production and sometime leads dryness.


Computer user tips - Click to read more

    computer and back pain

    How can a computer cause back pain?
    A survey released by the National Institute for Occupational Safety and Health (NIOSH) showed that approximately 20 percent of computer workers have musculoskeletal disorders. 

    Computer vision syndrome (CVS) can be define as “complex of eye and vision problems related to near work that are experienced during or related to computer use.” And this condition most often occurs when the viewing demand of the task exceeds the visual abilities of the computer user. The symptoms can vary but mostly include eyestrain, headaches, blurred vision (distance or near), dry and irritated eyes, slow refocusing, neck and backache, light sensitivity, double vision, and color distortion.
    It is most often said that “the eyes lead the body.”
    Nature has made our visual system so dominant that we alter our body posture to accommodate any deficiency in the way we see.
    In many office situations where the vision of a worker is compromised and they must adapt their posture to ease the strain on the visual system. If an older worker is using single vision reading glasses, which are designed for a 16-inch viewing distance, they must lean in toward a screen that may be 20 to 25 inches away in order to clear the image. If the same worker is using traditional bifocals, which are designed to see the near object in the lower visual field, they must tilt their head backward and lean forward to put the viewing section of the lens into proper position to see the screen. If a computer worker is most often viewing hard copy that is off to one side, they might need to keep moving their head back and forth to view the screen alternatively with the hard copy. This will also lead to neck discomfort. They will continually alternate their viewing gaze between the keyboard and the screen using head movements, which can cause neck and shoulder fatigue.
    These and many other situations are all too common in the office environment and cause excessive postural accommodations that lead to the symptoms of neck and back discomfort. Researchers found that doing computer work for three hours contributed not only to eye muscle fatigue but also muscle pain in the head, neck and upper back regions. One of the main reasons for these problems is the setup of the workstation — most often the position of the monitor. All too frequently the monitor is placed either on top of the Central Processing Unit (CPU) or on a monitor stand. This places the screen in a position where the user must look either straight ahead or actually upward in their gaze.