Upper respiratory infection and sinusitis are the most important predisposing factors for periocular infection. Streptococcus species are the predominant causative agents. Both diseases can usually be successfully treated with intravenous antibiotics, but some patients may require surgery to control extensive infection.

The results of this study suggest that Staphylococcus epidermidis experimental endophthalmitis induces the expression of cytokines TNF-alpha, IL-1beta, and IFN-gamma in the vitreous. The time course of those cytokine expression levels is closely associated to the clinical presentation of this endophthalmitis model.

The initial presentation of this rare clinical entity creates difficulties in reaching a correct diagnosis. A presumed acanthamoeba keratitis is the first choice among many similar conditions. Thus abuse of topical ocular anesthetic drops should be included in the differential diagnosis of cases of chronic keratitis as it may masquerade as acanthamoeba keratitis. A current or past history of psychiatric and mental disorders or psychoactive substance abuse is important in the diagnosis. Functional and anatomical results after appropriate treatment are usually poor. Psychiatric counselling is extremely helpful and is in fact mandatory in the management of these patients.

Contrast sensitivity defects are detected in patients with insulin-dependent diabetes mellitus. These defects may represent an early dysfunction of the retina, visual pathway, or both in patients with insulin-dependent diabetes mellitus who do not show any signs of diabetic retinopathy.

BackgroundThe purpose of the study is to describe the clinical course and treatment of idiopathic retinitis, vasculitis, aneurysms and neuroretinitis. The study utilized non-randomized, retrospective and interventional case series. The eight eyes of six patients were analysed. Testing included wide fluorescein angiography, indocyanine green angiography and systemic evaluation. Treatment involved observation, panretinal laser photocoagulation (PRP) for peripheral retinal ischemia, grid laser for macular oedema and focal laser on the macroaneurysms. The main outcome measures were initial visual acuity (VA), initial stage at diagnosis, clinical course, surgical intervention, final VA, final stage and complications of disease.ResultsFive out of eight eyes with retinal ischemia in more than two quadrants that were treated with PRP and grid laser for macular oedema maintained excellent VA and demonstrated no progression of retinal ischemia during follow-up. The two eyes which exhibited retinal ischemia in less than two quadrants and macular oedema were treated with grid laser and focal laser on the macroaneurysms, but did not undergo PRP. VA improved by two lines of the Snellen chart, and there was no progression of retinal ischemia during the 3 and 4 years of follow-up. One eye with neither retinal ischemia nor macular oedema was not treated, and the clinical picture remained stable during the follow-up.ConclusionEarly PRP may be considered in the presence of angiographic evidence of peripheral retinal non-perfusion. However, treatment could be withheld until the patient develops retinal ischemia in more than two quadrants.