Dear All,
I have a patient and need suggestions. Any opinions are welcome.
Female, 64 years old, underwent bilateral cataract surgery one and a half months ago, with a postoperative BCVA of 20/30. She had hypertension and DM, without history of cancer. One month ago, she suddenly experienced a simultaneous decrease in vision in both eyes, without pain on eye movement or headache. She complains of vision like looking through fog and things appearing brighter, but there is no significant photophobia or obvious dimming of vision. At that time, the visual acuity recorded by the local doctor was 20/200.
One month later, I saw the patient. She reported that her vision had improved somewhat but was still not clear. The BCVA was found to have recovered to 20/40. Color vision: 0/8, RAPD was negative. The anterior chamber was quiet. No cells in the vitreous. The optic nerves and retina were normal. Autofluorescence was normal. Static perimetry showed a small central scotoma in the left eye, and a larger central scotoma and inferonasal scotoma in the right eye. MRI of the brain and orbits w/o contrast was normal. Macular OCT line scan (inner retina and photoreceptors, RPE) was normal. The GC-IPL (Zeiss) was symmetrically thinned by 60 microns in both eyes, and the thickness of RNFL in all quadrants was normal. MfERG showed a severe decrease in macular response. Full-field ERG showed a significant decrease in light adaptation responses in both eyes, and a mild decrease in all dark adaptation responses.
What further tests are needed? What could be the possible diagnosis?
Thanks!
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Yan
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