Untitled Document
 I
am sure you know that everyone's eyes are a little different. People
have different eye colors and also have different eye sights. Do you know why
some friends of yours wear very thick glasses? Yeah, that's
easy. I bet you are saying, "It's because they have bad eye sight."
Well, then, can you tell me the difference between near-sighted vision and far-sighted vision? Now,
if you started scratching your head, pay close attention to this week's
feature on eye sight and
how corrective lenses can help
people see better.
■Do you know how your eyes work?■
There are four important parts of your eyeball. Cornea is a clear tissue that helps the eye
focus. Iris is the colored part of your eyeball.
Pupil plays an important
role of letting light into the eye.
And lastly, retina is at the very back
of the eyeball. Retina produces and delivers the image you see to your brain.
If you have good vision, it means that all four parts of your eyeball
are working very well. It means, your eyes are capturing the image
and sending the image to your brain. If you have poor vision, it means
your eyeball isn't properly capturing the image
you see. It could be because light isn't coming into your eyeballs
in the right angle. Or it
could be because the eyeball isn't able to focus on an object sharply. When this is the
case, glasses or contact lenses are needed
to help light come into your eyes in the right way and allow your eyes to focus
on an image.
■Near-sighted vs. Far-sighted■
Near-sightedness and far-sightedness are common problems in eye vision.
But it's easy to get the two confused. Being near-sighted
means you can see stuff that's near like a book, but has trouble seeing
stuff that's far away. Being far-sighted
means you can see stuff that's far away, but has trouble seeing up
close like reading the print in a book. In both
cases, the image is not properly focused on the retina, which is at
the back of your eyeball. With near-sightedness, the image
becomes focused in front of the retina. With
far-sightedness, the image
is focused behind the retina. In both cases, glasses and contact lenses
can correct the problem.
 ■Going
for an eye exam■
It's a good idea to visit an eye optometrist every 6 months
or so. This is a necessary check up for your eyes. Your
eye sight could have gone worse, or your eyes may be suffering from
an allergy or infection without you knowing.
■Glasses can be fashionable■
Who says people wearing glasses are geeks? If you're going to
get glasses, never mind about the bad things people say about glasses.
There are countless cool frames to choose from. Since
you'll be wearing your glasses a lot, make sure they are comfortable. I suggest you to pick plastic lens for your glasses.
Glass tends to be heavy and it can easily break. Plastic is light and allows you to be
active and comfortable at the same time. |
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