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According to data from the Centers for Disease Control and Prevention.
Ocular syphilis, which can cause blindness and blurry vision, develops out of a syphilis infection in the spinal cord, which spreads to the eye. Ocular syphilis can involve any part of the eye, but it typically causes inflammation of the middle layer of the eye. It can blur vision, leads to vision loss, and can even travel up into the brain.
A chronic bacterial disease, syphilis can be contracted by other means but is typically a sexually-transmitted disease.
In very rare cases, it can be spread through prolonged kissing, as well as the more common routes of transmission: vaginal, anal and oral sex.
It comes from the bacteria Treponema pallid umbrella. Syphilis is notoriously difficult to diagnose since its symptoms are similar to other conditions – a runny nose and soar throat.
In the early stages, patients can receive an injection of Benzathine penicillin G. This will not undo the internal damage but will eliminate the infection. For those with latent syphilis – and are not sure how long they had it – doctors recommend having three doses of the penicillin injection, seven days apart from each other.
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