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Diagram of the human eye showing macula and fovea. Although J. D. Gass originally identified four types of idiopathic juxtafoveolar retinal telangiectasis in 1982, contemporary researchers describe three types collectively known as idiopathic juxtafoveal telangiectasia: macular telangiectasia type 1, macular telangiectasia type 2, and macular telangiectasia type 3.
Dilated blood vessels can also develop on the legs, although when they occur on the legs, they often have underlying venous reflux or "hidden varicose veins" (see Venous hypertension section below). When found on the legs, they are found specifically on the upper thigh, below the knee joint and around the ankles.
Sclerotherapy (the word reflects the Greek skleros, meaning hard) [1] is a procedure used to treat blood vessel malformations (vascular malformations) and also malformations of the lymphatic system. A medication is injected into the vessels, which makes them shrink. It is used for children and young adults with vascular or lymphatic malformations.
In the eye, side effects and complications of laser photocoagulation are not infrequent [clarification needed] and include loss of vision, worsening visual acuity, reduced night vision, and hemorrhaging in the eye. [6] In about 8% of cases can cause scarring which in turn can lead to permanent central vision loss. [1] [12]
Lesions lips, patient with hemorrhagic hereditary telangiectasia. Hereditary hemorrhagic telangiectasia (HHT), also known as Osler–Weber–Rendu disease and Osler–Weber–Rendu syndrome, is a rare autosomal dominant genetic disorder that leads to abnormal blood vessel formation in the skin, mucous membranes, and often in organs such as the lungs, liver, and brain.
“Any medication you take has an increased risk of side effects,” Bavand Youssefzadeh, an ophthalmologist in Beverly Hills, Calif., tells Yahoo Life. “Patients who take these medications ...
Prominent blood vessels (telangiectasia) over the white of the eyes usually occur by the age of 5–8 years, but sometimes appear later or not at all. [7] The absence of telangiectasia does not exclude the diagnosis of A–T. Potentially a cosmetic problem, the ocular telangiectasia do not bleed or itch, though they are sometimes misdiagnosed ...
In general, branch retinal vein occlusion has a good prognosis: after 1 year 50–60% of eyes have been reported to have a final visual acuity of 20/40 or better even without any treatment. With time the dramatic picture of an acute branch retinal vein occlusion becomes more subtle, hemorrhages fade so that the retina can look almost normal.