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Toxoplasma chorioretinitis, more simply known as ocular toxoplasmosis, is possibly the most common cause of infections in the back of the eye (posterior segment) worldwide. The causitive agent is Toxoplasma gondii, and in the United States, most cases are acquired congenitally. The most common symptom is decreased visual acuity in one eye.
There are many diseases known to cause ocular or visual changes. Diabetes , for example, is the leading cause of new cases of blindness in those aged 20–74, with ocular manifestations such as diabetic retinopathy and macular edema affecting up to 80% of those who have had the disease for 15 years or more.
The symptoms classically attributed to AK include decreased or blurred vision, sensitivity to light (photophobia), redness of the eye (conjunctival hyperemia), and pain out of proportion to physical exam findings. [15] [7] Another clinical feature that can distinguish Acanthamoeba from bacterial causes of keratitis is a lack of discharge from ...
Generally, diseases outlined within the ICD-10 codes H53-H54 within Chapter VII: Diseases of the eye, adnexa should be included in this category. Subcategories This category has the following 2 subcategories, out of 2 total.
(H53.6) Nyctalopia (Night blindness) — a condition making it difficult or impossible to see in the dark (H54) Blindness — the brain does not receive optical information, through various causes (H54/B73) River blindness — blindness caused by long-term infection by a parasitic worm (rare in western societies)
Cytomegalovirus (a type of herpes virus) is what causes cytomegalovirus retinitis. Other types of herpes viruses include herpes simplex viruses and Epstein-Barr virus. Once an individual is infected with these viruses they stay in the body for life. [8] What triggers the virus to reactivate are the following (though CMV can also be congenital). [7]
The retina is the eye's "sensing" tissue. Retinitis may be caused by a number of different infectious agents. Its most common form, called retinitis pigmentosa, has a prevalence of one in every 2,500–7,000 people. This condition is one of the leading causes that leads to blindness in patients in the age range of 20–60 years old.
Symptoms of endophthalmitis include severe eye pain, vision loss, and intense redness of the conjunctiva. [1] Bacterial endophthalmitis more commonly presents with severe and sudden symptoms whereas fungal causes have a more insidious onset and severity, with 80% of ocular candidiasis (both chorioretinitis and endophthalmitis) being asymptomatic. [3]