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The perception of floaters, which may be annoying or problematic to some people, is known as myodesopsia, [5] or, less commonly, as myodaeopsia, myiodeopsia, or myiodesopsia. It is not often treated, except in severe cases, where vitrectomy (surgery), laser vitreolysis, and medication may be effective.
PVD may also occur in cases of cataract surgery, within weeks or months of the surgery. [5] The vitreous membrane is more firmly attached to the retina anteriorly, at a structure called the vitreous base. The membrane does not normally detach from the vitreous base, although it can be detached with extreme trauma.
Floaters suddenly appearing in the field of vision or a sudden increase in the number of floaters. Floaters may resemble cobwebs, specks of dust, or shapes such as ovals or circles; Flashes of light in vision ; Experiencing a "dark curtain" or shadow moving from the peripheral vision toward the central vision; Sudden blurred vision
Even after treatment, it can take months for the body to clear all of the blood from the vitreous. [2] In cases of vitreous hemorrhage due to detached retina, long-standing vitreous hemorrhage with a duration of more than 2–3 months, or cases associated with rubeosis iridis or glaucoma , a vitrectomy may be necessary to remove the standing ...
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.
After cataract surgery, patients with diabetes mellitus are generally acknowledged to have an increased risk of macular edema. [12] A prior history of retinal vein occlusion was the only significant preoperative risk factor in a large retrospective series of 1659 consecutive cataract surgeries. [13]
Visual outcome after cataract surgery was close to conformity with WHO guidelines in Buenos Aires, where more than 80% of post-surgery eyes had visual acuity of 6/18 (20/60) or better, but ranged between 60% and 79% in most of the other regions, and was less than 60% in Guatemala and Peru. [126]
Many patients will develop a cataract within the first few years after surgery. [10] Because there have been no published controlled trials evaluating the benefits and risks stemming from post vitrectomy cataract surgery, ophthalmologists have no clear evidence to rely upon when counseling patients about cataract surgery. [11]