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OUR WORLD-CLASS RETINA EYE CARE IS JUST AS IMPRESSIVE
ONE OF THE area's MOST RESPECTED eye surgeon
board ceRTIFIED OPHTHALMOLOGIST,
AHMAD TARABISHY, md
Dr Tarabishy, one of the area’s most respected eye surgeons, is a Board Certified Ophthalmologist and Retina specialist. Dr Tarabishy performs both Laser surgery and Cyrotherapy, providing our patients with both the care and peace of mind they deserve.
Dr. Tarabishy’s clinical interests include uveitis and systemic inflammatory diseases, macular degeneration, diabetic retinopathy, and surgical treatments of various retinal diseases including complex diabetic and rhegmatogenous retinal detachments. He is passionate about retina surgery and employs the latest cutting-edge surgical techniques. He has published over 15 articles in major, peer-review scientific journals and is a co-author for 2 book chapters in major ophthalmology textbooks.
WHAT ARE FLOATERS?
You may sometimes see small specks or clouds moving in your field of vision. These are called floaters. You can often see them when looking at a plain background, like a blank wall or blue sky. Floaters are actually tiny clumps of gel or cells inside the vitreous, the clear gel-like fluid that fills the inside of your eye. While these objects look like they are in front of your eye, they are actually floating inside it. What you see are the shadows they cast on the retina, the layer of cells lining the back of the eye that senses light and allows you to see. Floaters can appear as different shapes such as little dots, circles, lines, clouds, or cobwebs.
WHAT CAUSES FLOATERS?
When people reach middle age, the vitreous gel may start to thicken or shrink, forming clumps or strands inside the eye. The vitreous gel pulls away from the back wall of the eye, causing a posterior vitreous detachment. This is a common cause of floaters.
Posterior vitreous detachment is more common in people who:
• Are nearsighted
• Have undergone cataract operations
• Have had YAG laser surgery of the eye
• Have had inflammation inside the eye
The appearance of floaters may be alarming, especially if they develop very suddenly. You should contact your ophthalmologist (Eye M.D.) right away if you develop new floaters, especially if you are over 45 years of age.
ARE FLOATERS EVER SERIOUS?
The retina can tear if the shrinking vitreous gel pulls away from the wall of the eye. This sometimes causes a small amount of bleeding in the eye that may appear as new floaters. A torn retina is always a serious problem, since it can lead to a retinal detachment.
You should see your ophthalmologist at Lakeland Eye Clinic As soon as possible if:
• Even one new floater appears suddenly
• You see sudden flashes of light
If you notice other symptoms, like the loss of side vision, you should see your ophthalmologist.
CAN FLOATERS BE REMOVED?
Floaters may be a symptom of a tear in the retina, which is a serious problem. If a retinal tear is not treated, the retina may detach from the back of the eye. The only treatment for a detached retina is surgery. Other floaters are harmless and fade over time or become less bothersome, requiring no treatment. Even if you have had floaters for years, you should schedule an eye examination with your ophthalmologist if you suddenly notice new ones.
WHAT CAUSES FLASHING LIGHTS?
When the vitreous gel rubs or pulls on the retina, you may see what look like flashing lights or lightning streaks. You may have experienced this same sensation if you have ever been hit in the eye and seen “stars.”
The flashes of light can appear off and on for several weeks or months. As we grow older, it is more common to experience flashes. If you notice the sudden appearance of light flashes, you should contact your ophthalmologist immediately in case the retina has been torn.
Floaters and flashes of light become more common as we grow older. While not all floaters and flashes are serious, you should always have a medical eye examination by an ophthalmologist to make sure there has been no damage to your retina.
A RETINAL VEIN OCCLUSION OCCURS WHEN A VEIN IN THE EYE’S RETINA IS BLOCKED
The retina is the layer of light-sensing cells lining the back of your eye. It converts light rays into signals, which are sent through the optic nerve to your brain where they are recognized as images. A blocked vein damages the blood vessels of the retina. Hemorrhages (bleeding) and leakage of fluid occurs from the areas of blocked blood vessels.
There are two different types of retinal vein occlusion:
• Central retinal vein occlusion (CRVO): when the main vein of the eye (located at the optic nerve) becomes blocked
• Branch retinal vein occlusion (BRVO): when one of the smaller branches of vessels attached to the main vein becomes blocked
WHO IS AT RISK FOR A RETINAL VEIN OCCLUSION?
Certain illnesses increase your risk for developing retinal vein occlusion, including:
• High blood pressure
• Age-related vascular (blood vessel) disease
• Blood disorders
If a branch retinal vein occlusion occurs in one eye, there is an increased chance (about 10%) that a branch or central vein occlusion will occur in the other eye in the future.
WHAT ARE THE COMPLICATIONS AND SYMPTOMS OF RETINAL VEIN OCCLUSION?
Macular edema: If blood and fluid leak into the central part of the retina called the macula, swelling of the macula occurs (called macular edema). The macula is the part of your retina responsible for your fine detail vision. It is what allows you to read small print, thread a needle, and read street signs. Macular edema causes blurred and/or decreased vision.
Abnormal blood vessel growth (neovascularization): Retinal vein occlusion can cause abnormal vessels to begin to grow in the retina. These new vessels are very fragile and may bleed or leak fluid into the vitreous—the gel-like substance that fills the center of the eye. Small spots or clouds in your field of vision called floaters can appear. In more advanced cases of neovascularization, the abnormal blood vessels may actually cause the retina to detach from the back of the eye.
Pain in the eye: In severe cases of CRVO, a blocked vein causes abnormal blood vessel growth, leading to painful pressure in the eye (rubeosis). If complications from retinal vein occlusion are not treated, irreversible blindness may occur.
HOW IS RETINAL VEIN OCCLUSION DETECTED?
Your ophthalmologist detects retinal vein occlusion by examining the retina with an instrument called an ophthalmoscope. He or she may also perform fluorescein angiography, a procedure that takes special photographs of the eye, in order to further investigate the blood vessels in your eye.
HOW IS RETINAL VEIN OCCLUSION TREATED?
There is no known cure for retinal vein occlusion, though in some cases laser surgery may be used to reduce the macular edema and stabilize or improve vision. In severe CRVO, laser surgery is used to prevent or treat the abnormal blood vessel growth that can lead to glaucoma.
You may be able to prevent retinal vein occlusion from occurring again by properly managing any health conditions that contribute to this eye problem (such as diabetes, glaucoma or high blood pressure.
WHAT IS THE RETINA?
The retina is a nerve layer at the back of your eye that senses light and sends images to your brain. An eye is like a camera. The lens in the front of the eye focuses light onto the retina. You can think of the retina as the film that lines the back of a camera.
WHAT IS A RETINAL DETACHMENT?
A retinal detachment occurs when the retina is pulled away from its normal position. The retina does not work when it is detached. Vision is blurred, just as a photographic image would be blurry if the film were loose inside the camera. A retinal detachment is a very serious problem that almost always causes blindness unless it is treated.
WHAT CAUSES RETINAL DETACHMENT?
A clear gel called vitreous (vit-ree-us) fills the middle of the eye. As we get older, the vitreous may pull away from its attachment to the retina at the back of the eye. Usually the vitreous separates from the retina without causing problems. But sometimes the vitreous pulls hard enough to tear the retina in one or more places. Fluid may pass through the retinal tear, lifting the retina off the back of the eye, much as wallpaper can peel off a wall.
The following conditions increase the chance of having a retinal detachment:
• Previous cataract surgery
• Severe injury
• Previous retinal detachment in your other eye
• Family history of retinal detachment
• Weak areas in your retina that can be seen by your ophthalmologist
WHAT ARE THE WARNING SYMPTOMS OF RETINAL DETACHMENT?
These early symptoms may indicate the presence of a retinal detachment:
• Flashing lights
• New floaters
• A shadow in the periphery of your field of vision
• A gray curtain moving across your field of vision
These symptoms do not always mean a retinal detachment is present; however, you should see your ophthalmologist as soon as possible. Your ophthalmologist can diagnose retinal detachment during an eye examination in which he or she dilates (enlarges) the pupils of your eyes. Some retinal detachments are found during a routine eye examination. Only after careful examination can your ophthalmologist tell whether a retinal tear or early retinal detachment is present.
Most retinal tears need to be treated with laser surgery or cryotherapy (freezing), which seals the retina to the back wall of the eye. These treatments cause little or no discomfort and may be performed in your ophthalmologist’s office. Treatment usually prevents retinal detachment.
Almost all patients with retinal detachments require surgery to return the retina to its proper position.
TYPES OF SURGERY
There are several ways to fix a retinal detachment. The decision about which type of surgery and anesthesia (local or general) to use depends upon the characteristics of your detachment. In each of the following methods, your ophthalmologist will locate the retinal tears and use laser surgery or cryotherapy to seal the tear.
WHAT ARE THE RISKS OF SURGERY?
Any surgery has risks; however, an untreated retinal detachment usually results in permanent severe vision loss or blindness. Some of the surgical risks include:
• High pressure in the eye
Most retinal detachment surgery is successful, although a second operation is sometimes needed. If the retina cannot be reattached, the eye will continue to lose sight and ultimately become blind. The more severe the detachment, the less vision may return.
WHAT IS UVEITIS?
In most cases of uveitis, the cause of the disease remains unknown. Uveitis has many different causes:
• A virus, such as shingles, mumps, or herpes simplex
• A fungus, such as histoplasmosis
• A parasite, such as toxoplasmosis
• Related disease in other parts of the body, such as arthritis, gastrointestinal disease, or collagen vascular disease such as lupus
• A result of injury to the eye
HOW IS UVEITIS DIAGNOSED?
A careful eye examination by an ophthalmologist is extremely important when symptoms occur. Inflammation inside the eye can permanently affect sight or even lead to blindness if it is not treated. Your ophthalmologist will examine the inside of your eye. He or she may order blood tests, skin tests, or x-rays to help make the diagnosis.
HOW IS UVEITIS TREATED?
Uveitis is a serious eye condition that may scar the eye. It needs to be treated as soon as possible. Eyedrops, especially corticosteroids and pupil dilators, can reduce inflammation and pain. For more severe inflammation, oral medication or injections may be necessary.
Uveitis can be associated with these complications:
• Glaucoma (increased pressure in the eye)
• Cataract (clouding of the eye’s natural lens)
• Neovascularization (growth of new, abnormal blood vessels)
• Damage to the retina, including retinal detachment
These complications also may need treatment with eyedrops, conventional surgery, or laser surgery. If you have a “red eye” that does not clear up quickly, contact your ophthalmologist. Since uveitis can be associated with disease in other parts of the body, your ophthalmologist will want to know about your overall health. He or she may want to consult with your primary care physician or other medical specialists.
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If you are experiencing any of the symptoms below, it is very important to see your ophthalmologist at the first sign of any trouble.
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