Eye Diseases & Vision Disorders

American Optometric Association's Glossary of Eye and Vision Disorders

 

In order to view the content, you must install the Adobe Flash Player. Please click here to get started.




traumatic_cataract.JPGCataracts: The natural lens in the eye gradually becomes less clear as we get older. When opacities develop in the lens and the lens gets too hazy, vision will be impaired. Our office can diagnose and manage cataract care. When the cataract affects the vision to the extent that you cannot read or see distant objects comfortably, we will recommend cataract surgery. Our office co-manages with cataract specialists that are proven experts in cataract surgery. Cataract surgery can provide you with a bright new world of vision.  To learn more about cataracts, click here: CATARACT


Glaucoma:
Glaucoma.JPGGlaucoma gradually destroys the optic nerve tissue in the back of the eye. The greatest danger of glaucoma stems from the fact that the disease is painless and without obvious symptoms until significant damage has occurred. The most common cause is from pressure being too high inside the eye, but vascular disease and other diseases can also cause glaucoma. We always monitor for glaucoma during routine eye examinations. Tests include checking the pressure of the eye, screening for peripheral vision defects and analyzing the appearance of the optic nerve. If you are diagnosed with glaucoma, we typically prescribe medications that lower the eye pressure. Most forms of glaucoma are successfully treated with eye drops. Laser treatments and eye surgery are secondary treatments that offer alternative ways to treat more advanced glaucoma.  To learn more about glaucoma, click here: GLAUCOMA


Diabetes:
Diabetic_retinopathy.jpgDiabetic patients should have a dilated retinal examination each year. Laser treatments have proven to slow the progression of retinal eye disease for many patients. Diabetes often stimulates the growth of new blood vessels in the back of the eye, which ultimately leak and damage the retina. If this condition is discovered early, laser treatment can destroy these vessels. We have the latest instruments used to detect changes in the back of the eye. If we discover advancing diabetic eye disease that can be treated or needs further evaluation, we will refer you for consultation and further testing to a board certified retinal specialist.  To learn more about diabetic retinopathy, click here: DIABETES

Age-Related Macular Degeneration:
dry_ARMD.JPG(AMD) is the leading cause of severe vision loss in adults over age 50. The Centers for Disease Control and Prevention estimate that 1.8 million people have AMD and another 7.3 million are at substantial risk for vision loss from AMD. Caucasians are at higher risk for developing AMD than other races. Women also develop AMD at an earlier age than men. This eye disease occurs when there are changes to the macula, a small portion of the retina that is located on the inside back layer of the eye. AMD is a loss of central vision that can occur in two forms: "dry" or atrophic and "wet" or exudative.

Most people with macular degeneration have the dry form, for which there is no known treatment. The less common wet form may respond to laser procedures, if diagnosed and treated early.

Some common symptoms are: a gradual loss of ability to see objects clearly, distorted vision, a gradual loss of color vision, and a dark or empty area appearing in the center of vision.  If you have any of these symptoms, call your doctor of optometry immediately for a comprehensive eye examination including a dilated retinal examination.  Central vision that is lost to macular degeneration cannot be restored. However, low vision devices, such as telescopic and microscopic lenses, can be prescribed to maximize existing vision.   To learn more about Age-Related Macular Degeneration (AMD), click here: AMD

COMMON VISION DISORDERS

Myopia:
Nearsightedness, or myopia, as it is medically termed, is a vision condition in which close objects are seen clearly, but objects farther away appear blurred. Nearsightedness occurs if the eyeball is too long or the cornea, the clear front cover of the eye, has too much curvature. As a result, the light entering the eye isn't focused correctly and distant objects look blurred.

 Hyperopia:  Farsightedness, or hyperopia, as it is medically termed, is a vision condition in which distant objects are usually seen clearly, but close ones do not come into proper focus. Farsightedness occurs if your eyeball is too short or the cornea has too little curvature, so light entering your eye is not focused correctly.

Common signs of farsightedness include difficulty in concentrating and maintaining a clear focus on near objects, eye strain, fatigue and/or headaches after close work, aching or burning eyes, irritability or nervousness after sustained concentration.

Astigmatism: a vision condition that causes blurred vision due the curvature of the lens inside the eye. An irregular shaped cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye. As a result, vision becomes blurred at any distance.

Astigmatism is a very common vision condition. Most people have some degree of astigmatism. Slight amounts of astigmatism usually don't affect vision and don't require treatment. However, larger amounts cause distorted or blurred vision, eye discomfort and headaches.

Presbyopia: is a vision condition in which the crystalline lens of your eye loses its flexibility, which makes it difficult for you to focus on close objects.

Presbyopia may seem to occur suddenly, but the actual loss of flexibility takes place over a number of years. Presbyopia usually becomes noticeable in the early to mid-40s. Presbyopia is a natural part of the aging process of the eye. It is not a disease, and it cannot be prevented.

Some signs of presbyopia include the tendency to hold reading materials at arm's length, blurred vision at normal reading distance and eye fatigue along with headaches when doing close work. A comprehensive optometric examination will include testing for presbyopia.

To help you compensate for presbyopia, your optometrist can prescribe reading glasses, bifocals, trifocals or contact lenses. Because presbyopia can complicate other common vision conditions like nearsightedness, farsightedness and astigmatism, your optometrist will determine the specific lenses to allow you to see clearly and comfortably. You may only need to wear your glasses for close work like reading, but you may find that wearing them all the time is more convenient and beneficial for your vision needs.