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Floaters, Are They Normal or due to Diabetic Retinopathy?

Floaters are generically defined as black spots in your vision.  They move to and fro with eye movement.  Most of the time they are small, tiny and black, but really can be large and translucent, too.  From a doctor’s standpoint, size does not matter.  New floaters can mean a retinal tear and the development of a retinal detachment.

Floaters can develop from a variety of causes such as a posterior vitreous detachment (PVD) or a retinal tear.  A posterior vitreous detachment (PVD) is a normal occurrence and happens more frequently as we age, with increased near-sightedness (eye slightly larger) and with trauma.  The vitreous is the “gel” that fills most of the eye.  With time it will separate from the surface of the retina and usually produces the sudden onset of new floaters  (For additional article on floaters/flashes, click here).

A PVD can cause a retinal tear.  It usually does not, but it can.  New floaters require a dilated eye exam to exclude a tear in the retina.  Patients are usually at highest risk for developing a tear following a posterior vitreous detachment for the first 6 weeks following symptoms.  Retinal tears can develop into a retinal detachment if not treated.

Occasionally, a vitreous hemorrhage can result from a retinal tear.  So, add this to the list of causes, too.

Floaters and Diabetic Retinopathy In a patient with diabetic retinopathy, new floaters can be related to a PVD or retinal tear just as any other person without diabetes.  New floaters; however, can also be related to the diabetic retinopathy and are caused by a vitreous hemorrhage.  Bleeding into the vitreous is caused by the presence of abnormal (aka neovascularization) blood vessels on the surface of the retina.  This signals the development of proliferative diabetic retinopathy.

What to you need to do? In any case, alert your doctor to your new symptoms.  It is recommended that you get a dilated eye exam to look for a posterior vitreous detachment (PVD), vitreous hemorrhage or retinal tear.

“Randy”

Randall V. Wong, M.D.
www.TotalRetina.com
Ophthalmologist, Retina Specialist

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A detached retina is potentially blinding. The retina is the light sensitive tissue that lines the inside of the eye. A retinal tear or hole usually leads to a retinal detachment. Floaters can sometimes be the earliest, and only, symptom. Many times there is little warning and a retinal detachment usually occurs without trauma.

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