A careful examination by your ophthalmologist (Eye M.D.) may detect small, fine crystals in the center part of your macula — a sign of macular telangiectasia.
First, your eye doctor will perform a thorough assessment of your vision including testing with an Amsler grid to detect any wavy or dark areas in your central vision. The doctor will then dilate (widen) your pupils using eyedrops and examine your eyes with an ophthalmoscope, a device that allows him or her to see the retina and other areas at the back of the eye.
If your ophthalmologist suspects you have macular telangiectasia, he or she usually will take special photographs of your eye with optical coherence tomography (OCT) and fluorescein angiography.
OCT scanning uses light waves to create detailed images of the underlying structure of the retina. OCT images show the thickness of the retina, and can help your Eye M.D. detect swelling and abnormal blood vessels.
During fluorescein angiography, a vegetable-based dye is injected into a vein in your arm. The dye travels throughout the body, including your eyes. Photographs are taken of the back of your eye as the dye passes through the retinal blood vessels. Abnormal areas will be highlighted by the dye. Fluorescein angiography is often repeated periodically, especially if vision is worsening.
Next Page: Macular Telangiectasia Treatment
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