Visual field defect after radial optic neurotomy for central retinal vein occlusion.
OBJECTIVE
To evaluate visual field defects after radial optic neurotomy (RON) in eyes with central retinal vein occlusion (CRVO).


METHODS
Eight patients (eight eyes) underwent RON for macular edema associated with CRVO. Goldmann perimetry was performed on each patient both before and after surgery.


RESULTS
Postoperative Goldmann perimetry showed a temporally located wedge-shaped visual field defect consistent with neural damage secondary to RON in seven eyes (88%). After surgery, the visual field decreased from preoperative values by 7% at 3 months (P = 0.30) and by 21% at 12 months (P = 0.0023). Although three patients (38%) were aware of the postoperative visual field defect, only one patient (13%) considered this defect to be a visual disability.


CONCLUSIONS
After RON, most patients showed a postoperative defect in the temporal visual field consistent with the incision to the optic disk. However, this visual field defect appears to be well tolerated by most patients.
Tsujikawa
Akitaka
A
Department of Ophthalmology, Kobe City General Hospital, Kobe, Japan. tujikawa@kuhp.kyoto-u.ac.jp
Hangai
Masanori
M
Kikuchi
Masashi
M
Ishida
Kazuhiro
K
Kurimoto
Yasuo
Y
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D013508:Ophthalmologic Surgical Procedures / Q000009:adverse effects*; D009900:Optic Nerve / Q000601:surgery*; D012170:Retinal Vein Occlusion / Q000601:surgery*; D012607:Scotoma / Q000209:etiology* / Q000503:physiopathology; D058609:Visual Field Tests; D014794:Visual Fields / Q000502:physiology*