Introduction Gyrate atrophy of the choroid and retina is a metabolic disorder, which is inherited in an autosomal recessive pattern. Although gyrate atrophy is rare, it is concerning as it results in blindness. It is characterized by hyperornithinemia, retinal atrophy, leads to progressive myopia and tunnel vision,...

Coronavirus disease 2019 (COVID-19) has been declared as worldwide pandemic. The most common symptoms are fever, fatigue, flu-like syndrome and accompanied by respiratory distress. About 10% of patients with COVID-19 in the acute phase show manifestations eye, especially retina. activity cell surface enzyme protein angiotensin-converting 2 (ACE2) is believed underlying clinical eye. This study ...

Retinal detachment is a pathological condition that leads to vision loss without timely surgical treatment. To restore the anatomical integrity of detached retina, number interventions (Scleral Buckling, Pars Plana Vitrectomy, combined Vitrectomy/Scleral Pneumatic Retinopexy, cryo-, laser-, and electropexy) approaches damaged area are traditionally used, among which one new promising monopolar ...

diabetic retinopathy is one of the most important reasons of blindness which causes serious damage in the retina. the aim of this research is to detect one lesions of the retina, named exudates automatically with image processing techniques. preprocessing is the first step of proposed algorithm. after preprocessing, the optic disc was detected and removed from the retinal image due to the same ...

Background Exocytosis in photoreceptors involves fusion of vesicles with the plasma membrane at base a specialized proteinaceous electron-dense structure known as synaptic ribbon. The molecular mechanisms underlying exocytosis ribbon synapses are not well understood. Research suggests compound model where undergo homotypic forming larger prior to membrane. But how this process is mediated remai...