Abstract
To evaluate the imaging features of cats' optic disc after radial optic neurotomy (RON). Unilateral RON were performed on 10 healthy cats. Optical coherence tomography (OCT) and fundus fluorescein angiography (FFA) were performed on the 1st, 15th, 30th and 90th day after RON. On the 1st d after the surgery, OCT showed that the depth of the incision reaching the posterior surface of luminal cribrosa, with the appearance of adjacent sensory retinal edema. The edema and thickening of sensory retinal disappeared 15 days after the operation. The depth of incision became shallow 30 days after the operation. On the 90th day, the scar filled the luminal cribrosa and the incision. FFA showed that the 1st d after the operation, blocked fluorescence was striped and retinal vessels leaked near the incision during the vein phase. The incision appeared as a spindle shape with hypofluorescence during the early phase and partial staining during the late phase 15 to 30 days after the operation. On the 90th day, there was obvious scar staining at the site that reached the cribriform and retina. The imaging features of RON are in accord with the reparative process.
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