retinoblastoma is the most common intraocular neoplasm in children. glial tumor of the retina and optic nerve head are considered to be congenital and are therefore classified as hamartomas. concurrent occurrence of these tumors in one eye is uncommon and by reviewing the studies, a few cases have been reported. we report a 9 years old boy with eye enucleation and concurrent occurrence of retin...

purpose: to evaluate the anatomical and functional outcomes of surgical management of retinal detachments associated with choroidal colobomas methods: in this retrospective study, 31 eyes of 31 patients with coloboma-related retinal detachments enrolled. all the eyes underwent standard three-port pars plana vitrectomy with internal tamponade with nonheavy silicon oil in 24 (77.4%) or 20% sulfur...

purpose: to compare the anatomical results of scleral buckling surgery with and without retinopexy in the management of phakic rhegmatogenous retinal detachment (rd). methods: in this retrospective, nonrandomized, interventional, comparative case series, data of 71 phakic eyes of 71 patients with rhegmatogenous rd that had undergone scleral buckling were evaluated. the procedure in 41 consecuti...

BACKGROUND Combined with vitreoretinal surgery, silicone oil injection has become a standard technique and improves the prognosis of complex retinal detachment. As silicone oil leads to long term complications, removal of silicone oil from the eye is recommended. To evaluate the outcome after silicone oil removal, retinal redetachment, visual acuity, and complications were analysed. METHODS T...

PURPOSE Surgical repair of retinal attachment or macular hole frequently requires intraocular gas. This necessitates specific postoperative positioning to improve outcomes and avoid complications. However, patients struggle with correct positioning. We have developed a novel sensor to detect the position of the gas bubble in the eye and provide feedback to patients in real time. In this paper, ...

PURPOSE Nonexudative (dry) age-related macular degeneration (AMD), a leading cause of blindness in the elderly, is associated with the loss of retinal pigmented epithelium (RPE) cells and the development of geographic atrophy, which are areas devoid of RPE cells and photoreceptors. One possible treatment option would be to stimulate RPE attachment and proliferation to replace dying/dysfunctiona...

PURPOSE Proliferative vitreoretinopathy (PVR) is characterized by the proliferation and migration of retinal pigment epithelial (RPE) and other cells into the vitreous cavity. The PVR membrane formation also is associated with collagen production by RPE. The authors examined the effect of a proline analog, cis-hydroxyproline (CHP), on proliferation, collagen synthesis, attachment, and migration...

   Introduction: Retinal vein occlusion  is a common vascular disorder disrupting vision. Two basic types of RVO are branch retinal vein occlusion and central retinal vein occlusion (CRVO).  Retinal vein occlusion is a multifactor process including systemic illness and local retinal factors.RVO may be associated with atherosclerotic risk factors. We analyzed the role of 2 dimensional transthor...

purpose: to determine the frequency of risk factors for retinal vein occlusion (rvo) in patients referred to a private clinic in rasht during 1995-2001. methods: this cross-sectional study was conducted on all patients with rvo who were referred to the clinic. sex, age, hypertension (htn), cardiovascular diseases (cvd), diabetes mellitus (dm), hypercoagulable states, glaucoma, smoking, hyperlip...