What is Anisometropia?

Image size diffence results from anisometropia, a common cause of double vision following scleral buckle surgery. Randall Wong, M.D.

Anisometropia is an imbalance in the prescription needed between your two eyes.  There are several causes of anisometropia, but the most common for a retinal surgeon is a result of a scleral buckle used to repair a retinal detachment. "Double Vision" When looking at an object, in most people, we see one single object.  In actuality the left eye and right eye each see … [Read more...]

Preventing Giant Retinal Tears

Giant Retina Tear, Perfluoron, Randall Wong, MD., Retinal Specialist

Giant retinal tears (GRT) are the worst type of retinal detachment.  These types of retinal detachment have higher surgical complications, are more difficult to fix and often lead to legal blindness or worse. Rhegmatogenous retinal detachments are the more common types of retinal detachments.  A retinal tear or retinal hole may lead to a retinal detachment.  In contrast … [Read more...]

A Branch Retinal Vein Occlusion: aka BRVO

Branch Retinal Vein Occlusion

A branch retinal vein occlusion, or BRVO, is an occlusion of one of the retinal veins serving the retina.  This is different than a central retinal vein occlusion which involves the entire retina. Symptoms of a Branch Vein Occlusion Acute painless loss of vision is common, but some patients, as this one, have minimal or no vision loss. Why? The degree of vision … [Read more...]

What is the Vitreous?

Vitrectomy for the removal of Floaters, Randall Wong, M.D.

The vitreous is the gel-like substance which fills most of the inside of your eye.  The vitreous is composed mainly of water and is very similar to a jelly-fish; i.e., a substance which is mainly water, but still has substance. The vitreous fills the posterior chamber of the eye which is the space behind the iris and the lens. Purpose of the Vitreous The vitreous is a … [Read more...]

Marc Staal Hit by Slapshot to Right Eye

Possible Eye Injury from Blunt Trauma

Marc Staal of the New York Rangers was struck in his right eye yesterday by a hockey puck fired by his opponent Kimmo Timonen of the Philadelphia Flyers. The incident has refueled the visor debate.  Had the NHL veteran been wearing a visor, the puck would have simply glanced off harmlessly. As we all await status reports about the injury, just what might have happened … [Read more...]

Retinal Implant Now FDA Approved

Retinal prosthesis gains FDA approval. Randall V. Wong, M.D., Retina Specialist, Fairfax, Virginia.

The FDA just approved Argus II, a retinal implant, to restore vision to patients with a rare blinding disease, retinitis pigmentosa. The device, an external visual system that communicates wirelessly with an internal implant, is marketed by Second Sight Medical Products, Inc.  Argus II has been used in Europe for several years and the company hopes to start U.S. … [Read more...]

What is an Epiretinal Membrane or Macular Pucker?

Epiretinal membrance, macular pucker, ERM, cellophane maculopathy,

An epiretinal membrane (ERM), or macular pucker, is a thin layer of tissue that grows on the surface of the macula.  It is found in normal, healthy eyes and may cause decreased vision and/or distortion. Epiretinal membranes are not related to macular degeneration. ERM = Macular Pucker = Cellophane Maculopathy = Wrinkle Symptoms of an ERM The most common symptoms of a … [Read more...]

Vitrectomy for Floaters (FOV)

A vitrectomy is the basic operation used by a retina specialist for treatment of blood, epiretinal membranes, macular holes, retinal detachments and...floaters. There is no difference between a vitrectomy for floaters (FOV) and a vitrectomy for removal of blood, macular pucker, etc.  In all cases, the vitreous must be removed to allow me to safely operate on the … [Read more...]

Does Cataract Surgery Cause Macular Degeneration?

Does Cataract Surgery Cause Macular Degeneration? Randall Wong, M.D., Ophthalmologist, Fairfax, Virginia

Cataract surgery does not cause macular degeneration.  Macular degeneration, however, is often discovered just after cataract surgery when the vision fails to improve as hoped, causing many patients (and their frustrated families) to wonder if the cataract surgery caused macular degeneration. Failure for Vision to Improve In most cases of cataract surgery, vision gets … [Read more...]

Retinal Tears and Vitreous Hemorrhage

Vitrectomy for Retinal Tear to Remove Vitreous Hemorrhage

A vitreous hemorrhage may be caused by a retinal tear.  Sometimes there is so much blood in the eye that direct examination is impossible and we can only guess at the most likely cause.  It is the most difficult situation for me to handle as a doctor. Patients lose significant vision as the blood in the middle of the eye physically blocks all light from hitting the … [Read more...]

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