The phenomenon of degeneration of vitreous body and deformation of shape, sometimes accompanied by spider web-like semi-transparent bugs of plankton is known myodesopsia, which is caused by the degeneration and deformation of vitreous body. These black dots will move even when the eyes stay still. When they try to kill the mosquitoes, they realize that these are not mosquitos but black dots in their eyes. Some people see black dots in their eyes that appear to be mosquitos flying in front of them.Proliferative diabetic retinopathy or trauma could lead to the pulling of vitreous body and even leads to tractional retinal detachment.Central serous retinopathy is a type of exudative retinal detachment that frequently occurs to male aged 30-40 years old who require long period of vision use or face with enormous work stress.Moreover, the trauma of eyeball could induce retinal attachment. However it could happen to emmetropia (namely normal refractive condition in eyes) and the hyperopia. The retinal detachment that requires surgical treatment as soon as possible refers to the rhegmatogenous retinal detachment which mostly occurs to patients of myopia and particularly to those with -4.0~6.0 diopters.What are the types of retinal detachment?īased on the causes, retinal detachment can be divided into three types: rhegmatogenous, tractional and exudative. The patients shall need to restore the retina of sensory perception, so that the close adhesion with the retinal pigment epithelium will preserve good vision.Once the sensory retina and pigment epithelium are separated and results in retinal detachment, the retina of sensory layer will lose most of the nutrition supply while the function gradually degenerates. These two layers mostly rely on the outer layer of meridian for supply of nutrients. The retina we address normally refers to the sensory retina, which normally closely and firmly attaches to the retinal pigment epithelium.The retina is highly valuable and could not be replaced based on current medicine. It resembles the film of camera however the acquisition of film is rather easy and cheap for replacement at any time. The retina is a thin and fine sensory tissue layer lined on the back wall of the eyeball it is the tissue for the eyeball to substantially sense lighting, shadow and colors.Retinal detachment is one of the acute diseases in ophthalmology and must be treated in few days or else the vision will deteriate and the patients may be blind.Nonetheless retinal detachment is closely related to myopia and hence the incidence rate of retinal detachment in Taiwan is probably even higher. Based on this estimation, there are approximately 2,000 people in Taiwan who suffer from the disease. The incidence rate of retinal detachment in the United States is 1 in every 10,000 people.What is the incidence rate of retinal detachment?
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