Retinal Detachment

A retinal detachment occurs when the thin layer of tissue at the back of the eye, called the retina, separates from its normal position. This condition affects the visual system and can cause sudden symptoms like flashes of light, a shower of floaters, or a shadow or curtain over part of the visual field. The retina is essential for capturing light and sending visual signals to the brain, so detachment can lead to vision loss if not treated promptly. It often results from a tear or hole in the retina that allows fluid to accumulate underneath. This separation disrupts the retina's function and can cause permanent damage if untreated.

Retinal detachment is a pathological separation of the neurosensory retina from the underlying retinal pigment epithelium. It most commonly occurs due to a rhegmatogenous mechanism, where a retinal tear or break allows vitreous fluid to enter the subretinal space, leading to detachment. Other types include tractional detachment caused by fibrovascular membranes and exudative detachment from fluid accumulation without a tear. This condition is a vision-threatening emergency because the detached retina loses its blood supply and function, potentially resulting in permanent blindness. Risk factors include myopia, trauma, prior ocular surgery, and lattice degeneration. Clinical significance lies in the rapid progression of visual symptoms and the need for urgent diagnosis and intervention to preserve vision.