Butterfly-shaped macular dystrophy

To report a case of butterfly-shaped macular dystrophy. A 34-year-old woman presented with metamorphopsia in both eyes from 2 years ago. Visual acuity was 9/10 in right eye and 10/10 in left eye. There was no pathologic finding on slit lamp biomicroscopy and funduscopy other than mild macular retinal pigment epithelium mottling. Visual fields and electroretinogram were normal but electrooculogram showed sub-normal results. Fluorescein angiography showed black, non-fluorescent butterfly-shaped macular structures. Butterfly-shaped macular dystrophy occurs in middle aged subjects and presents with mild visual loss and metamorphopsia. It is slowly progressive and leads to marked visual acuity reduction in older ages. Considering the paucity of clinical findings, fluorescein angiography and/ or electrophysiological tests are recommended for making a correct diagnosis

[Vitreopapillary traction in non-arteritie anterior ischemic optic neuropathy]

To describe the association between optic disc traction and non-arthritic anterior ischemic optic neuropathy [NAION].eighty three eyes of 83 patients with NAION were evaluated by optical coherence tomography [OCT] for detecting vitreous adhesion to the optic never head with separation form adjacent retina [partial posterior vitreous detachment]. Those who were negative for such adhesion underwent ultrasonography to detect complete PVD. Fifty male and 33 female subjects with mean age of 51.9 +/- 10yr were studied. Partial PVD with optic never head adhesion was found in 54 patients [65.1%] using OCT. Ultrasonography found complete PVD in all eyes with optically empty spaces in OCT. Vitreous traction on optic never head from PVD may play a causative role in some cases of NAION. This traction may impair vascular supply and axoplasmic flow leading to signs and symptoms of NAION