peripapillary การใช้

In the acute stage, lasting a few weeks, the affected eye demonstrates an edematous appearance of the nerve fiber layer especially in the arcuate bundles and enlarged or telangiectatic and tortuous peripapillary vessels ( microangiopathy ).
Significant visual loss may occur and following a period of observation for spontaneous resolution, treatment with temporal peripapillary laser photocoagulation followed by vitrectomy and gas injection followed by face-down positioning is very effective in treating this condition.
Eventually, however, an oval-shaped atrophy with a horizontal major axis appears in the retinal pigment epithelium, and has the appearance of beaten bronze, along with sparing of the area surrounding the optic disc ( peripapillary sparing ).
In the model, the measuring beam passed through three linear retarders : the corneal compensator ( CC ), the cornea ( C ), and a uniform radial retarder ( R ), that represented birefringent regions in the retina ( e . g ., peripapillary RNFL or macula ).