How to check your eyes
Vision screenings in school systems often do not evaluate the functional use
of eyes for reading and writing activities. Most vision screenings in schools test
the child's visual acuity at 20 feet. Children may have 20/20 acuity for distance
but may have difficulty focusing and integrating their eyes to sustain looking at
reading and writing material.
Some children will even have double vision at close viewing distances but be
able to pass the vision screening for distance vision. While it makes little sense
to only screen visual acuity for distance and then to send the child back to the
classroom to work for the next several hours performing reading and writing tasks,
this is presently the standard that is being used in schools across the United States.
Protect your eyes
Here are some tips to protect your eyes. When you work in an area in which the
eyes need protection, be sure to wear protective safety glasses to keep the eyes
from harm. This will protect your eyes from chemicals, light, and heat. If you are
participating in sports, you will also need the proper helmets or goggles to prevent
injury. When working near moving particles where there is a great deal of blowing
sand or dust or even smoke, don't forget to wear goggles. These are common for many
industrial workers, but some work around the home also makes their use necessary.
When you do very close reading, it is a good idea to practice good eye hygiene
and to prevent eye injuries. Reading can be complex and is usually done without
any thought or attention to injuries. You use the external muscles of your eyeball
to shift from line to line; at the same time, your ciliary muscles keep your eyes
focused on the same point. The amount of light admitted by the pupil is controlled
by the muscles of the iris. You may have to re-read the same line of print if your
vision is in poor muscular condition.
Try not to read in a car or on a moving bus, train, or airplane because your
eye muscles are subjected to the strain of continually refocusing the words read.
Reading while lying down or propped on one elbow will cause eyestrain. Have a good
source of light if you plan to read in bed and assume a normal position for reading
with your back propped up with a pillow.
There are no eye exercises that will help your eyes see better or that will prevent
nearsightedness from getting worse. The article 'Can Eye Exercises improve vision'
provides information on how the concept of eye exercises helping vision came about.
Some of the eye exercise methods are the 'Yoga method' and the 'See Clearly method'.
Carrots won't improve eyesight for someone eating normal healthy food. However,
carrots are rich in beta carotene, which is converted into Vitamin A in the body.
Vitamin A is important in maintaining normal vision, and worldwide, Vitamin A deficiency
is a leading cause of blindness. Therefore in the developing world, where deficiency
of vitamin A is possible, eating carrots may be good advice.
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