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Glaucoma
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| Glaucoma
is an eye condition that develops when too much fluid pressure builds
up inside of the eye, explain doctors at The Cleveland Clinic. The
increased internal pressure, called intraocular pressure, can damage
the optic nerve, which transmits images to the brain. If damage
to the optic nerve from high eye pressure continues, glaucoma will
worsen your vision. Without treatment, glaucoma can cause blindness
within a few years.
Because most people with glaucoma have no early symptoms or pain
from this increased pressure, it is important to see your eye care
doctor regularly so that glaucoma can be diagnosed and treated before
long-term visual loss occurs. If you are over the age of 45 and
if you have a family history of glaucoma, you should have a complete
eye exam with an ophthalmologist every one to two years. If you
have health problems such as diabetes or a family history of glaucoma
or are at risk for other eye diseases, you may need to visit your
eye doctor more frequently. Glaucoma usually occurs when intraocular
pressure increases. This happens when the fluid pressure in the
eye's anterior chamber, the area between the cornea and the iris,
rises. Normally, this fluid, called aqueous humor, flows out of
the eye through a mesh-like channel. |
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Photorefractive
Keratotomy (PRK) Eye Surgery
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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, so that light traveling through
it is properly focused onto the retina located in the back of the
eye. There are a number of different surgical techniques used to
reshape the cornea. During PRK, an eye surgeon uses a laser to reshape
the cornea. This laser, which delivers a cool pulsing beam of ultraviolet
light, is used on the surface of the cornea not underneath the cornea,
as in LASIK.
What Are the Advantages of PRK?
PRK is highly accurate in correcting many cases of nearsightedness.
Approximately 80% of PRK patients have 20/20 vision without glasses
or contact lenses one year after the surgery; 95%-98% have 20/40
or better without glasses or contacts.
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Conjunctivitis
(Pink Eye)
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Conjunctivitis is an inflammation of the conjunctiva, the thin,
clear tissue that lies over the white part of the eye and lines
the inside of the eyelid. This tissue helps keep the eyelid and
eyeball moist.
What Causes Conjunctivitis?
Conjunctivitis has a number of different causes, including:
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- Virus
- Bacteria
- rritants such as shampoos, dirt, smoke, and pool chlorine
- Allergies, like dust, pollen, or a special type of allergy
that affects some contact lens wearers
- Sexually transmitted diseases
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