Ramakrishna Ratnakaram

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OBJECTIVE To determine the safety and efficacy of subretinal gene therapy in the RPE65 form of Leber congenital amaurosis using recombinant adeno-associated virus 2 (rAAV2) carrying the RPE65 gene. DESIGN Open-label, dose-escalation phase I study of 15 patients (range, 11-30 years of age) evaluated after subretinal injection of the rAAV2- RPE65 vector(More)
Giant cell arteritis (GCA) can be a devastating disease resulting in blindness if not promptly diagnosed and treated. The only proven treatment for GCA is systemic corticosteroids; however, there are many side-effects associated with this therapy including ocular side-effects such as ocular hypertension, cataract formation and central serous(More)
BACKGROUND/AIMS Bevacizumab has been shown to be an effective treatment of macular oedema. This study assesses the response of macular oedema to bevacizumab with specific focus on the first 24 h postinjection. METHODS Subjects with diabetic macular oedema (DMO) or exudative age-related macular degeneration (ARMD) received intravitreal bevacizumab(More)
Two consecutive patients with idiopathic central serous chorioretinopathy and decreased vision subsequent to subfoveal choroidal neovascular membranes were treated with photodynamic therapy applied using the protocol of the Treatment of Age-Related Macular Degeneration with Photodynamic Therapy Study Group. Main outcome measures included best-corrected(More)
Javal's rule, which states that the total astigmatism of the eye--or refractive astigmatism--is equal to 1.25 (keratometric astigmatism) - 0.50 x 90, implies a linear relation between the two entities. Data published by Grosvenor, Quintero, and Perrigin (Am J Optom Physiol Opt 1988;65:292-7) show that for eyes having no more than 2.50 D of keratometric(More)
BACKGROUND The current method of delivering gene replacement to the posterior segment of the eye involves a three-port pars plana vitrectomy followed by injection of the agent through a 37-gauge cannula, which is potentially wrought with retinal complications. In this paper we investigate the safety and efficacy of delivering adeno-associated viral (AAV)(More)
Bilateral ulnar decubitus is described in a 69-year-old patient maintaining prone positioning after vitrectomy, membrane peeling, and perfluoropropane gas injection for the treatment of a macular hole. Patients should be warned to report any skin breakdown or ulnar paresthesias resulting from positioning and to change position frequently to allow weight(More)
PURPOSE Retinal pigment epithelial changes described after vitreoretinal surgery may result from localized compression injury caused by intentional or inadvertent contact with vitreoretinal instruments. The authors evaluated these changes resulting from manipulation of the retina without frank retinal injury. METHODS One eye each of six pigmented rabbits(More)
We describe 2 cases in which evaluation of rigid contact lens fluorescein patterns were used to delineate and characterize topography irregularities. Contact lens analysis confirmed and localized topography findings of an elevated central island in 1 patient and a semicircular pattern in the other patient. To determine a therapeutic strategy to correct(More)