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Retinal detachment is a condition where the retina pulls away from the tissue underneath it. [1] [2] [3] It may start in a small area, but without quick treatment, it can spread across the entire retina, leading to serious vision loss and possibly blindness. [4] Retinal detachment is a medical emergency that requires surgery. [2] [3]
Nyctalopia (/ ˌ n ɪ k t ə ˈ l oʊ p i ə /; from Ancient Greek νύκτ-(núkt-) 'night' ἀλαός (alaós) 'blind, invisible' and ὄψ (óps) 'eye'), [1] also called night-blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases.
Peripheral (posterior) vitreous detachment occurs when the gel around the eye separates from the retina. This can naturally occur with age. However, if it occurs too rapidly, it can cause photopsia which manifests in flashes and floaters in the vision. Typically, the flashes and floaters go away in a few months.
Retinal tufts increase the risk of a retinal tear or a detached retina, although the risk is not high- 1% of tufts are thought to lead to retinal detachment. [ 2 ] [ 6 ] In addition if there is retinal thinning near a zonular traction tuft, there is an increased risk of retinal detachment.
Retinal detachment should be considered if there were preceding flashes or floaters, or if there is a new visual field defect in one eye. [ 2 ] [ 3 ] If treated early enough, retinal tear and detachment can have a good outcome.
One grey area in the entire mechanism of outer segment disc shedding is in what exactly triggers the detachment of the discs and how they are transported out of the OS and phagocytosed by the RPE cells. Some studies suggest that disc detachment precedes engulfment by the RPE cells, and that an active process in the rod outer segment severs the ...
Vitreoretinal traction or retinal detachment cause flashes, floaters or dark shadows. [10] Sudden loss of vision may occur due to retinal artery occlusion, vitreous hemorrhage or retinal detachment. Intravascular occlusions may be seen in optic disc vessels. [11]
Retinal detachment frequently presents with unilateral visual field defects, blurring of vision, flashes of light, or floating spots. [ citation needed ] The risk of retinal detachment was estimated as about 0.4% within 5.5 years, corresponding to a 2.3-fold risk increase compared to naturally expected incidence, with older studies reporting a ...