Mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is a rare congenital disorder of mitochondrial DNA, presenting a wide range of clinical symptoms comprising headaches, seizures, aphasia, hearing loss, visual defects, and hemiparesis. Herein we report a case of a previously asymptomatic 40-year-old male who presented with recurrent headache, seiz...

Background Visual acuity, like many other health-related problems, does not have an equal distribution in terms of socio-economic factors. We conducted this study to estimate and decompose economic inequality in presenting visual acuity using two methods and to compare their results in a population aged 40-64 years in Shahroud, Iran.   Methods: The data of 5188 participants in the first phase o...

We would like to express our gratitude Matthew Burton and colleagues for the Commission on Global Eye Health (April, 2021),1Burton MJ Ramke J Marques AP et al.The Lancet Health: vision beyond 2020.Lancet Glob Health. 2021; 9: 489-551Summary Full Text PDF PubMed Scopus (50) Google Scholar which highlights magnitude of challenge. As a plea we mention glaucomas. feel this preventable cause blindne...

PURPOSE To report the prevalence of blindness and visual impairment and the contribution of uncorrected refractive error to visual loss, in a population-based sample of Mexican Americans aged 40 and older. METHODS Proyecto VER is a population-based study of blindness and visual impairment in Mexican Americans in Arizona. Block groups in Tucson and Nogales were randomly selected with probabili...

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...

Background: Visual impairment and blindness are common in older people in Britain. It is important to know the causes of visual impairment to develop health service and research priorities. The authors aimed to identify the causes of visual impairment in people aged 75 years and older in Britain. Methods: In the MRC Trial of the Assessment and Management of Older People in the Community, trial ...

BACKGROUND Visual impairment and blindness are common in older people in Britain. It is important to know the causes of visual impairment to develop health service and research priorities. The authors aimed to identify the causes of visual impairment in people aged 75 years and older in Britain. METHODS In the MRC Trial of the Assessment and Management of Older People in the Community, trial ...

purpose: to evaluate the effect of  patch therapy on visual acuity in adults with ametropic amblyopia. methods: this randomized clinical trial was performed on 66 patients with unilateral ametropic amblyopia aged 9 to 35 years reffered to a clinic in shahroud. the patients were randomly assigned to two groups. in the treatment group, based on the visual acuity of the amblyopic eye, 3-6 hours da...

purpose: to report a case of posterior ischemic optic neuropathy (pion) following percutaneous nephrolithotomy (pcnl). patient and findings: a 57-year-old male who underwent pcnl because of renal stone was referred due to painless bilateral visual loss to the level of light perception immediately after the operation. the patient had history of diabetes mellitus, hyperlipidemia, and mild anemia....