University of Iowa Health Care

Ophthalmology and Visual Sciences

Diabetic Retinopathy:

From One Medical Student to Another

Jesse Vislisel and Thomas Oetting, MS, MD


Patients usually do not experience symptoms until late in the course of the disease when treatment may be ineffective. Late symptoms of DR vary depending on the cause. Bleeding into the vitreous can cause sudden loss of vision. Macular edema and ischemia are two other mechanisms of decreased vision.

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last updated: 09-01-2010

Vislisel J, Oetting T.
Diabetic Retinopathy: from one medical student to another. Sept. 1, 2010; Available from:

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