We have all heard that reading in the dark and playing too much computer games are bad for your eyes, along with a host of other lines that seem to make sense.
Let us explore some of the myths :
Eating carrots will improve your eyesight.
High in vitamin A, carrots will provide the small amount needed for good vision. Vitamin A can also be obtained from milk, cheese, egg yolk and liver.
Sitting too close to the TV is bad for your eyes.
It may give you a headache but it won’t damage your vision. Children with short-sightedness (myopia) sometimes sit close to the TV in order to see the images more clearly.
Reading in the dark will weaken your eyes.
You may get a headache from reading in dim light, but it will not weaken your sight. For centuries, night time reading and sewing was done by candlelight or kerosene lamps. Whether the room is dark or lighted, or if the light is in front or behind you, will not make any difference to the health of your eyes.
Using glasses or contacts will weaken eyesight and the wearer will eventually become dependent on them.
Your eyes will not grow weaker as a result of using corrective lenses. Your prescription may change over time due to ageing or disease.
Crossed eyes can be treated.
Children are not able to outgrow strabismus on their own but with help, it can be easily corrected at a young age.
Nothing can be done to prevent vision loss.
At the first signs of blurred vision or flashes of light, you should see your doctor. If detected early enough, depending on the cause, there are treatments that can correct, stop or slow down the loss of vision.
Looking straight at the sun will harm your eyes.
Not only will it cause headache and distort vision temporarily, it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet radiation on the eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
For the same reason, it is never safe to look directly at an eclipse through any device except those scientifically designed for that purpose.
Using computers can damage your eyes.
It will not harm your eyes but if you’re using a VDT (video display terminal) for long periods of time, you blink less often than normal. This reduced rate of blinking makes your eyes dry, which may lead to eyestrain.
Wearing the wrong kind of eyeglasses will damage the eyes.
Wearing a pair with the wrong lenses or not wearing glasses at all, will not physically damage your eyes. However, children younger than eight years old who need eyeglasses should wear their own prescription to prevent the possibility of developing amblyopia or “lazy eye.”
Contact lenses can prevent short-sightedness from getting worse.
There is no evidence that wearing contact lenses improves vision or prevents near-sightedness from getting worse.