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What does it mean to have 20/20 vision?
20/20 vision describes visual acuity, or the sharpness of vision at
20 feet from an object. Having 20/60 vision means that you must be at 20 feet to
see what a person with normal vision can see at 60 feet. 20/20 d... |
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Whether it’s a desire to simply see better or an urge to throw away their
glasses, every month thousands of Americans elect to undergo refractive surgery,
a procedure used to correct common vision problems. This elective surgery is
performed in a vari... |
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Optometrist Ann Laurenzi of the Cleveland Clinic Cole Eye Institute explains
what those letters, numbers and symbols mean on your eyeglass prescription.
When you look at your prescription for glasses, you will see numbers listed
under the headings of OS... |
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Because of the
value of sight, it is important to be proactive in your eye health. Taking a
role in maintaining your sight and preventing its loss includes choosing a
health care provider best suited for your needs – one that has the right
training and... |
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Age sometimes brings changes that weaken your eyes, but there are things you
can do to maintain lifelong eye and overall health. The solution may be as
simple as using brighter lights around the house to help prevent accidents
caused by weak eyesight or... |
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What is astigmatism?
Astigmatism is a common eye condition marked by an irregular curvature of the
cornea. This type of disorder is also known as a refractive error, and occurs in
nearly everyone to some degree. If the cornea is significantly curved... |
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If there is one thing that parents would like their children to learn, it’s
to seek lifelong good health. The best way to get the ball rolling is to
serve as a role model. Teach your children the important habits of good health, like
preventive eye exam... |
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When we see different colors, we are perceiving differences in the type of
light that is reaching our eyes. The way we see different colors is something
like the way we hear different sounds as being "low" or
"high." This is called... |
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What are dry eyes?
The eye depends on the flow of tears to provide constant moisture and
lubrication to maintain vision and comfort. Tears are a combination of water,
for moisture; oils, for lubrication; mucus, for even spreading; and antibodies
and sp... |
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Winter is here and the air has become drier. Despite the lack of moisture,
your eyes feel fine. Oh sure, maybe you blink a little bit more and by the end
of the day a splash of cold water feels really good. But is anything really
wrong? Maybe.
Patien... |
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It’s hard to imagine the rich and famous, a Hollywood star or a dot-com
mogul projecting an air of mystique and power without sporting a phat pair of
shades. And Elvis’ success as a crooner? Never would have happened without a
cool pair of Foster-Gran... |
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Where do you go when you are having difficulty with your eyesight? Depending
on the extent of the problem, your answer may vary. There are several different
types of eye care specialists you could see, including an ophthalmologist,
optometrist, and op... |
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During an eye appointment several types of eye tests may be performed. In
addition to a complete eye examination, your doctor may want to order one of the
following special tests.
Applanation method: A test that helps doctors diagnose
glaucoma by ... |
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The National Eye Institute (NEI), part of the National
Institutes of Health (NIH)
Supports research on eye disease and the visual system. NEI can send you
free brochures on eye disorders. Write to the NEI, 2020 Vision Place, Beheads,
MD 20892-3655; o... |
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Before medication is prescribed, tell your doctor if:
You are allergic to any medications.
You are currently taking any other medications (including over-the-counter
medications).
You are pregnant or think you might be pregnant.
You ha... |
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Eyeglasses correct vision problems, such as nearsightedness, farsightedness,
astigmatism, and presbyopia by focusing light more appropriately on
the retina.
The type of vision problem that you have determines the shape of the eyeglass
lens. For examp... |
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A successful visit to the eye doctor is only half the battle of
improving your child’s sight. You may also have to convince your child to wear his
or her prescription
glasses. Here are some
suggestions for helping your child with this adjustment.
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People with farsightedness (hyperopia) have difficulty focusing on objects
that are close, such as print in a book. More severe farsightedness would also cause
problems with seeing objects in the distance clearly, such as highway signs.
Farsightedness i... |
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First aid, no matter how simple, can make the difference in saving your eyesight. When an emergency happens, it is important to seek medical
attention for your eyes immediately after injury. A severe injury can lead to
infection, vision loss, or blindnes... |
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Advances in laser technology make refractive surgery an effective option for vision correction
Could glasses someday go the way of the old-fashioned monocle, relegated to the realm of period artifacts in antique photographs?Experts say refractive surg... |
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New study finds link between dry eye and omega-3 intake
Increasing your intake of omega-3 fatty acids may act as a buffer against dry
eye, especially for older women, according to a study published in the October
issue of the American Journal of Cli... |
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1. Wash your hands with soap and warm water. Dry them with a clean towel.
2. If you are putting in your own eye medicine, lie down or use a mirror. Ask
someone to check that you are getting the medicine in your eye.
3. Look up to the ceiling with bo... |
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What is keratoconus?
We see through the cornea, which is the clear, central part of the front
surface of the eye. Normally, the cornea has a dome shape, like a ball.
Sometimes, however, the structure of the cornea is just not strong enough to
hold th... |
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Laser epithelial keratomileusis (LASEK) is a newer form of laser vision
correction that combines many of the benefits of the two most commonly performed
procedures – LASIK (laser assisted in-situ keratomileusis) and PRK (photorefractive
keratectomy). ... |
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Laser epithelial keratomileusis, or LASEK, is a newer form of laser vision
correction that combines many of the benefits of the two most commonly performed
procedures -- LASIK and PRK. It is used to treat astigmatism, nearsightedness or
farsightedness... |
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Laser in-situ keratomileusis, or LASIK, is a popular surgical approach used
to correct vision in people who are nearsighted, farsighted, or have
astigmatism.
All laser vision correction surgeries work by reshaping the cornea, or clear
front part of t... |
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Low vision is the loss of sight that is not correctible with prescription
eyeglasses, contact lenses, or surgery. This type of vision loss does not
include complete blindness, because there is still some sight and it can
sometimes be improved with the... |
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Laser thermokeratoplasty, or LTK, is a new procedure used to treat farsightedness
and astigmatism. During the procedure a
laser beam uses heat to shrink and reshape the cornea. Vision is corrected in a
matter of seconds, without any cutting or removal... |
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Recent Food and Drug Administration approval of a new drug for wet
age-related macular degeneration now allows The Cleveland Clinic Cole Eye
Institute to offer this promising treatment to all eligible patients. The drug,
known as Macugen, was previous... |
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Myopia (or nearsightedness) affects a significant percentage of the
population, but this eye disorder is easily corrected with eyeglasses, contact
lenses, or surgery.
People who have myopia or nearsightedness have difficulty seeing distant
objects, b... |
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Eating carrots will help you maintain healthy vision.
Carrots are high in vitamin A, the nutrient essential for good vision. Eating
carrots will provide you with the small amount of vitamin A needed for good
vision, but it can also be found in other f... |
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What is night blindness?
Night blindness (nyctalopia) is the inability to see well at night or in
poor light. It is not a disorder in itself, but rather a symptom of an
underlying disorder or problem, especially untreated myopia.
What causes night ... |
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The eyes
play an important role in mobility, function, and enjoyment of life. For this
reason, it is important to maintain good ocular health. (The term
"ocular" refers to the eye and its organ system.)
The eye performs the sole task of captu... |
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Optic atrophy is a condition that affects the optic nerve, which carries
impulses from the eye to the brain. (Atrophy means to waste away or
deteriorate.)
Optic atrophy is not a disease, but rather a sign of a potentially more
serious condition. Opti... |
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Q: What is low vision?
A: A person is said to have low vision if his or her sight cannot be
corrected by eyeglasses, contact lenses, medical or surgical treatment. People
with low vision have some useful vision that often can be improved with visual
... |
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Presbyopia is part of the natural aging process of the eye, and can be easily
corrected. Technically, presbyopia is the loss of the eye's ability to change
its focus to see objects that are near. It is not a disease. It's as natural as
wrinkles, and i... |
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These are some simple guidelines to follow for wearing corrective lenses or
taking medicine prescribed by your eye health care provider.
Eyeglasses
Always store in a clean, dry place away from potential impact.
Clean your glasses with water and a... |
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What is myopia?Myopia, often called
nearsightedness, is the ability to see the detail of close objects more clearly
than those at a distant. Myopia can easily be detected by an eye doctor and
corrected with glasses or contact lenses, but many children w... |
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Photorefractive keratectomy, or PRK, is a type of laser eye surgery used to
correct mild to moderate nearsightedness farsightedness and/or astigmatism.
All laser vision correction surgeries work by reshaping the cornea, or clear
front part of the eye,... |
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Nearsightedness (myopia) is the inability to see objects clearly at
a distance. Some children are born with a progressive form of
nearsightedness, meaning that their uncorrected eyesight will worsen overtime.
Glasses usually help children see normally... |
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There are many things you can do to keep your child's eyes healthy and seeing
clearly from birth through the teen years.
Here are some tips to help your baby develop healthy visual skills.
Place toys within your baby’s focus, only 8-12 inches away... |
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Glaucoma is an eye disorder that results when too much fluid pressure builds
up inside of the eye. Most people with glaucoma have no early symptoms or pain
from increased pressure. If left untreated, however, glaucoma can lead to
permanent visual loss a... |
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Radial keratotomy was once one of the most frequently used surgical
procedures to correct nearsightedness. However, since the development of more
effective vision repair procedures, such as LASIK and PRK, RK is rarely used
today.
... |
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What are the common refractive vision problems?The
most common problems with sight have to do with the refraction process. The
shape of the cornea, strength of the lens, and length of the eyeball are all
factors in how well the eye refracts light. A nor... |
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Permanent monovision through LASIK refractive surgery offers many eyeglass
wearers the best of both views.
Two years ago Dr. Steven Shaw, a Brecksville, Ohio veterinarian, discovered
that laser surgery to his eyes could improve his golf game. Follow... |
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What is uveitis?
Uveitis involves all inflammatory processes of
the eye, especially the uveal tract, which is made up of the middle layer of
the eye (the uvea). The uvea includes the iris (colored part of the eye),
choroid (a thin membrane containing m... |
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The eyes grow and change quickly in the first few years of life. Regular eye
examinations are important to make sure a child’s eyes and vision are
developing normally. If problems are found early, they can be treated before any
damage is done to the c... |
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Part one of a two-part series
This month HealthExtra presents a two-part series on the challenges involved
in managing conditions that damage or deform the cornea, the clear outer layer
of the eye. In some of these conditions—keratoconus, for instance... |
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Part two of a two-part series
The objective of this series is to examine the challenges involved in
managing conditions that damage or deform the cornea, the clear outer layer of
the eye that plays a key role in vision. As noted in part 1 of the serie... |
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