An 81-year-old woman presented with light perception vision in her left eye and had pallid swelling of the left optic disk. Temporal artery biopsy was normal. Magnetic resonance imaging revealed enlargement and enhancement of the left orbital optic nerve. There were vitreous cells, but a vitrectomy specimen showed only a benign lymphocytic population. Her vision deteriorated to no light percept...

The case of a 40-year-old-man who presented to our clinic with bilateral blindness as a consequence of bomb blast injuries is reported. He had a completely opaque cornea, partially damaged posterior segment and perception of light in the right eye, while a clear cornea, totally damaged posterior segment and no light perception in the fellow eye. His corneas were successfully swapped which gave ...

there are many commentaries on light in its role as the subject matter of illuminative philosophy. according to suhrawardi, light is a symbol of “consciousness” and “self-consciousness”. therefore “knowledge” is the pivot of suhrawardi’s philosophy. the fundamental issue addressed in this study is the evaluation of vision or intuition in the essential topic of illuminationist philosophy, that i...

conclusions our case report showed the therapeutic effect of rhepo in complete curing of povl. regarding the side effects of epo such as thrombogenic effects or mild hemodynamic changes like transient sinus tachycardia during infusion, it seems that beneficial effects of epo is more than its disadvantages and expenses, for patients with povl. case presentation our patient was a 61-year-old man,...

Humans rarely confuse variations in light intensity, such as shadows, shading, light sources and specular reflections, from variations in material properties, such as albedo or pigment. This review explores the cues, or regularities in the visual world that evidence suggests vision exploits to discriminate light from material. These cues include luminance relations, figural relations, 3D-shape,...

We investigated whether specular highlights facilitate the perception of shape from shading in a search paradigm and how highlights interact with shading to facilitate this perception. Our results indicated that stimuli containing highlights led to shorter searching time with the dependence on the light source direction (top lights make searching faster), suggesting that highlights indeed facil...

We present a case of unilateral blindness with subarachnoid hemorrhage after rupture of an anterior communicating artery aneurysm. Her corrected visual acuity was 1.2 in the right eye and no light perception in the left eye. Fundus examination revealed intrarerinal and subretinal hemorrhages and optic disc atrophy in the left eye. We speculated the condition as an ischemic optic neuropathy. Alt...