Ocular toxocariasis, though rare, causes blindness in seven out of 10 of those affected by it, typically children, according to a national survey conducted by the CDC. 10 июн. 2011 г.
How common is ocular toxocariasis?
Proctor Foundation, University of California, San Francisco, the overall prevalence of Toxocara infection of the eye was relatively low at 1 percent of a general uveitis population. 1 Nevertheless, ocular toxocariasis remains an important cause of uveitis, especially in children and young adults.
How do roundworms affect eyes?
It also produces larvae, called microfilariae. Both the adult worm and its larvae can cause eye pain, impaired eye movement, and vision problems, including sensitivity to light.
How long do symptoms of toxocariasis take to show?
This migration of larvae causes the symptoms people experience. After eating eggs, it takes at least one week for symptoms to appear, but it may be weeks or months. Toxocariasis is not transmitted from person to person.
How many kids go blind from poo?
Just one pile of dog poo can contain a million roundworm eggs! In humans this can lead to stomach upsets, throat infections, asthma and in some cases blindness. Over 100 cases of partial blindness in children are seen every year due to toxocara canis eggs in faeces.
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