Some STDs such as Chlamydia, it was already known that could be spread through the eye, what was not known until now was that Treponema Pallidum, the bacteria causing Syphilis could affect the eyes. The most common symptoms are the appearance of ulcers in the case of Primary Syphilis, and reddish welts on the body, especially on the palms of the hands and feet, in Secondary Syphilis.
Recently it has been discovered that this bacterium can affect other parts of the body, specifically the eyes, is called ocular syphilis. It is not very common, but with the recent and worrying increase in cases diagnosed with Syphilis in recent years, its symptoms must be taken into account when conducting a screening. These symptoms can appear at any stage of the disease and can affect any structure of the eye. Any sudden change in vision, including blurred vision or even momentary blindness, should be taken into account for a diagnosis of Syphilis if there has been any recent risk contact.
The treatment for ocular syphilis will be exactly the same as for a common syphilis, with which it has a cure. If you have been diagnosed with any type of Syphilis, including the eye, you will always recommend an HIV test, there are numerous studies that claim that Syphilis is a common gateway for HIV.