In diabetic retinopathy, which layer of the retina is primarily affected?
ALayer of rods and cones
BRetinal pigment epithelium
COuter plexiform layer
DInner nuclear layer
Retinitis pigmentosa is characterized by ?
ALoss of central vision
BVisual field constriction
CTubular vision
DLoss of peripheral vision
Which of the following is not a true statement regarding the classic findings in retinitis pigmentosa?
ADisc edema is part of the classic triad of RP findings
BArgus 2 retinal implant is used as a treatment modality
CElectrophysiological changes appear early in the disease before the objective signs
DThe classic triad includes peripheral pigmentation, attenuated vessels, and optic atrophy. Disc edema is not part of the triad.
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