Articles related to RETINA

Despite the fact that OCT angiography (OCTA) does not technically qualify as multimodal imaging per se, it does offer several modes of visualization from a single scan, including an angiogram, a structural picture, and en face imaging with boundary specific segmentation. The use of OCTA can assist doctors in communicating to patients with geographic atrophy who are susceptible to exudation the necessity for routine follow-up. Clinicians can rule out artifacts by analyzing the flow overlay on the OCTA cross-section. If the flow isn’t where it should be for the illness, it’s probably an artifact.

The article proposes a computational model to account for the complex interaction between stimulus size, duration, and retinal cones-to-retinal ganglion cells ratio. The findings challenge the assumption of a constant critical number of retinal ganglion cells with respect to the enlargement of the critical area of summation with eccentricity in the macula, proposing instead a constant critical total retinal input. The research has implications for understanding perimetric sensitivity and modeling disease, particularly glaucoma.

When atypical AMD is suspected, additional multimodal imaging and a more detailed medical history are required to establish the correct diagnosis. The medical history, clinical examination, and retinal imaging findings of a 69-year-old White man with a long-standing medical history of schizophrenia, bilateral visual decline, nyctalopia, and blurred vision were sufficient evidence for the doctors to establish a presumed diagnosis of thioridazine retinal toxicity. Although it is a rare diagnosis due to the introduction of newer medications, patients with an underlying psychiatric history and atypical retinal findings on examination may have been or are currently taking the culprit psychotropic medication.

During pregnancy and the postpartum period, the body is subjected to abnormal stress, raising the possibility of eye and vision-related conditions and complications. Refractive changes, central serous chorioretinopathy, Purtscher-like retinopathy, diabetes, hypertension, and immunologic diseases are examples of eye and vision-related conditions and complications. Although diabetic retinopathy that develops during pregnancy usually resolves on its own after delivery, women are still at risk of progression for up to a year after delivery.

The most difficult aspect of epiretinal membrane (ERM) peeling may be the timing — early removal allows the membrane to reappear, whereas later surgery may impair restored visual acuity. An analysis published in BMC Ophthalmology evaluates clinical outcomes for patients with diffractive multifocal intraocular lenses (MIOLs) and compares how changing levels of ERM affect recovery.

Researchers used retinal imaging to examine the eyes of 200 people with age-related macular degeneration (AMD) to see who had subretinal drusenoid deposits (SDDs). Patients were asked to fill out a questionnaire about their family history of cardiovascular disease. There were 97 SDDs and 103 drusen only among the 200 patients. 47 of the 200 patients had severe heart disease, and 40 of the 47 (86%) had SDDs. In comparison, 57 (43%) of the 153 AMD patients who did not have these severe diseases had SDDs. According to the researchers, AMD patients who had these severe cardiovascular diseases and strokes were nine times more likely to have SDDs than those who did not.