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Updated: Aug 9, 2026
Optimization of the Retinal Vein Occlusion Mouse Model to Limit Variability
Published on: August 6, 2021
Visual field defect after radial optic neurotomy for central retinal vein occlusion
Akitaka Tsujikawa1, Masanori Hangai, Masashi Kikuchi
1Department of Ophthalmology, Kobe City General Hospital, Kobe, Japan. tujikawa@kuhp.kyoto-u.ac.jp
Purpose:
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.
