Retina
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Comparative Study
Macular features from spectral-domain optical coherence tomography as an adjunct to indirect ophthalmoscopy in retinopathy of prematurity.
To compare vitreoretinal pathology imaged with portable handheld spectral-domain optical coherence tomography (SD-OCT) to conventional indirect ophthalmoscopic examination in neonates undergoing screening for retinopathy of prematurity. ⋯ Spectral-domain optical coherence tomography provides new information about the premature infant retina that is of unknown importance relative to visual development and acuity. As used in this study, SD-OCT does not replace indirect ophthalmoscopy for evaluation of retinopathy of prematurity.
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Visual disturbances after high-altitude exposure were first reported in 1969. Manifestations may include retinal hemorrhage, papilledema, and vitreous hemorrhage. ⋯ Various high-altitude retinopathies were observed in the experienced climbers of this study. As high-altitude pursuits become more popular, attention should be paid to the increasing prevalence of high-altitude retinopathy.
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To investigate the effect of calcium channel blockers, spider toxins, on cell viability and the glutamate content of ischemic retinal slices. ⋯ Spider toxins reduced glutamate content and cell death of retinal ischemic slices.
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Randomized Controlled Trial Multicenter Study Comparative Study
Randomized trial evaluating short-term effects of intravitreal ranibizumab or triamcinolone acetonide on macular edema after focal/grid laser for diabetic macular edema in eyes also receiving panretinal photocoagulation.
To evaluate 14-week effects of intravitreal ranibizumab or triamcinolone in eyes receiving focal/grid laser for diabetic macular edema and panretinal photocoagulation. ⋯ The addition of 1 intravitreal triamcinolone injection or 2 intravitreal ranibizumab injections in eyes receiving focal/grid laser for diabetic macular edema and panretinal photocoagulation is associated with better visual acuity and decreased macular edema by 14 weeks. Whether continued long-term intravitreal treatment is beneficial cannot be determined from this study.