Tuesday, 1 January 2013

chorioretinities


TOXMOPLASMOSIS.the fetus infected in the earlier phase has the highest risk of severe damage.



What is toxoplasmosis?
This is an infection caused by a parasite called toxoplasma. It is not a virus and transmission is through eating contaminated food - especially meat products.

                CHORIODEREMIA




What is Choroideremia?
Choroideremia, often designated using the acronym CHM for short, describes the process of the blood vessels and capillaries in the choroid slowly degenerating to the extent that the parts of the eye relying on them – the sclera and the retina – also degenerate and vision is gradually lost. Some eye professional use the term “choroidal sclerosis” in respect of hardening.
Can choroideremia be detected early, and what then can be done about it?
There is a genetic test that can be carried out through a blood sample to diagnose choroideremia. A great deal of work has been carried out and is currently underway at the University of Alberta in Canada.
The most promising research in dealing with and treating choroideremia is in the area of gene therapy, and pre-clinical trials are being conducted.
In the meantime, a management process rather than treatment regime is the order of the day.
Improved nutrition and added vitamin supplementation, the wearing of UV-blocking sunglasses and consultations with specialists in the area of low vision are all actions that can be taken.neration
                                         LARGE SUBRETINAL HEMORRHAGE FROM A CHOROIDAL RUPTURE

Initially, a choroidal rupture may be obscured by a subretinal hemorrhage caused by tearing of the choriocapillaris. Later, after the blood has resorbed, a white curvilinear streak concentric to the optic disc is seen. Only rarely is a rupture oriented radially with respect to the optic disk. Most are temporal to the disc and single, although nasal and multiple ruptures can also occur (Fig. 21).

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