User:Mr. Ibrahem/Posterior vitreous detachment
Eye condition / From Wikipedia, the free encyclopedia
Posterior vitreous detachment (PVD) is a condition of the eye in which the vitreous separates from the retina.[3][4] Symptoms include floaters and flashes of light in the peripheral vision.[1] Pain does not occur.[3] This generally resolves over a few months.[1] Complications may include retinal tear, retinal detachment, macular hole, macular pucker, and vitreous bleed.[1][2]
Posterior vitreous detachment | |
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Other names | Vitreous detachment |
Schematic diagram of the human eye. | |
Specialty | Opthalmology |
Symptoms | Floaters, flashes of light[1] |
Complications | Retinal tear, retinal detachment, macular hole, macular pucker[1] |
Usual onset | >50 yr old[1] |
Risk factors | Nearsightedness[1] |
Diagnostic method | Dilated eye exam[1] |
Differential diagnosis | Migraine aura, uveitis, retinitis pigmentosa[2] |
Treatment | None, surgery[1] |
Prognosis | Usually good[2] |
Frequency | Common[1] |
Risk factors include being nearsighted.[1] Episodes may be triggered by cataract surgery, trauma, uveitis, and laser capsulotomy.[2] The underlying mechanism involves age related softening of the vitreous.[3] Diagnosis is by dilated eye exam.[1] Other measures used may include ultrasound and optical coherence tomography.[2]
In most cases no specific treatment is required.[1] Follow up may be recommended in 2 to 4 weeks to rule out complications.[2] Outcomes are usually good.[2] If the condition causes significant problems surgery, known as a vitrectomy, may be tried.[1]
Posterior vitreous detachment becomes common as people age.[1] About half of people over the age of 50 are affected.[2] Women are more commonly affected at a younger age.[2] It was first described in 1856 by Muller and 1875 by Briere.[2]