Platelet activation by collagen is increased in retinal vein occlusion.

Retinal vein occlusion (RVO) is the most common retinal vascular disorder second to diabetic retinopathy. The main risk factors in patients with RVO are hypertension, diabetes, hyperlipidemia, increased blood viscosity and glaucoma. The pathogenesis of RVO has not yet been clarified.

Retinal pigment epithelial tear following intravitreal injection of bevacizumab (Avastin).

Purpose: To report one case of retinal pigment epithelium tear following intravitreal bevacizumab injection for neovascular age-related macular degeneration.

Methods: A 59-year-old patient presented with occult choroidal neovascularization associated with a serous pigment epithelial detachment secondary to age-related macular degeneration. The patient was treated with an intravitreal injection of bevacizumab.

Retinal angiomatous proliferation treated by intravitreal triamcinolone and photodynamic therapy with verteporfin.

Purpose: To examine combined treatment of intravitreal triamcinolone acetonide (IVT) and photodynamic therapy (PDT) for retinal angiomatous proliferation (RAP).

Methods: Ten eyes of eight consecutive patients with RAP underwent a single injection (about 20 mg) of IVT followed 1 month later by PDT. Best-corrected visual acuity (BCVA) was measured by standardized protocol refraction.

Intravitreal triamcinolone acetonide as primary treatment for diffuse diabetic macular edema: a prospective noncomparative interventional case series.

Purpose: To evaluate the efficacy and safety of one intravitreal injection of 25 mg of triamcinolone acetonide as primary treatment for diffuse diabetic macular edema.

Methods: Intravitreal triamcinolone acetonide injection was performed in 30 eyes with previously untreated diabetic macular edema. The main outcome measures were logMAR visual acuity (VA) and central macular thickness (CMT) at 1, 3, and 6 months.

Occult with no classic choroidal neovascularization secondary to age-related macular degeneration treated by intravitreal triamcinolone and photodynamic therapy with verteporfin.

Purpose: To examine combined treatment with intravitreal triamcinolone acetonide (IVT) and photodynamic therapy (PDT) for occult with no classic choroidal neovascularization (CNV) secondary to age-related macular degeneration.

Methods: In this prospective, interventional case series, 11 eyes of 10 consecutive patients with occult with no classic CNV underwent a single injection (25 mg) of IVT followed 1 month later by PDT. Best-corrected visual acuity was measured by Early Treatment Diabetic Retinopathy Study (ETDRS) protocol refraction.