Here we report a case of sudden, unilateral, painless visual loss in a middle-aged patient. A 45-year-old gentleman with no known past medical history presented with acute painless left visual impairment. Clinically, he was found to have a left optic neuropathy associated with a swollen and hyperemic left optic disc. The right optic disc was noted to be small and crowded, and both optic discs w...

purpose: to compare the effect of high dose intravenous corticosteroid therapy with placebo in the treatment of recent traumatic optic neuropathy (ton). methods: in a double masked-placebo controlled clinical trial, 31 eyes of 31 patients were randomly assigned into two groups. only patients with history of ophthalmic or head trauma within the past 7 days were included. unconscious patients, th...

conclusions although toxoplasmosis nr is rare, it should be considered in the differential diagnoses of nr. case presentation a 13-year-old girl presented with painless subacute visual loss in her right eye for a week at khatam-al-anbia eye hospital in mashhad, iran. following comprehensive evaluation, a diagnosis of toxoplasmic nr was made. the nr favorably responded to classic anti-toxoplasmo...

Parapapillary chorioretinal atrophy and decreased retinal vessel diameter occur in glaucomatous eyes. To evaluate the frequency and degree of these signs in nonglaucomatous optic neuropathy, the authors evaluated morphometrically and compared 47 patients with nonglaucomatous optic nerve atrophy from extraocular causes with 292 patients with primary open-angle glaucoma and 179 normal subjects. E...

BACKGROUND Perioperative optic neuropathy is a disease which can lead to serious, irreversible damage of vision. This complication could be the result of non-ocular surgery, for example, cardiac or spinal procedures. We present a case of anterior ischemic neuropathy (AION) which occurred following a conventional coronary artery bypass graft procedure. CASE REPORT A 57-year-old man, 4 days aft...

PURPOSE To report a case of posterior ischemic optic neuropathy (PION) following herpes zoster ophthalmicus (HZO). CASE REPORT A 58-year-old woman with history of recent HZO in her right eye presented with acute painless loss of vision in the same eye to no light perception.Examination revealed a positive relative afferent pupillary defect and a normal appearing optic disc. Inflammatory and i...

CASE REPORT An alcoholic patient with loss of vision in his right eye and a peripapillar haemorrhage, who then presented with a venous thrombosis. Blood analysis revealed hyperhomocysteinemia with coagulation parameters within the normal range. In the follow-up he developed a bilateral optic neuropathy. DISCUSSION An increase in homocysteine levels is common in alcoholics, and it has been con...

DOS Times Vol. 11, No. 8 February, 2006 These disorders are often grouped together as they cause a syndrome characterized by papillomacular bundle damage, central or cecocentral scotoma, and reduction of color vision. The anterior visual pathway is susceptible to damage from toxins or nutritional deficiency (Table 1). Both toxicity and malnutrition, acting either independently or together, have...

The main limitation of the study by Danesh-Meyer et al. was neither discussed nor mentioned. The time axis was not taken into account. The functional change after an acute event such as anterior ischemic optic neuropathy (AION) is immediate, but there is a delay before the anatomic changes take place. In this study, most of the patients with nonarteritic anterior ischemic optic neuropathy (NAIO...