Beware! THIS Sexually Transmitted Disease Can Make You Go Blind

Ocular syphilis causes serious eye problems including permanent blindness. Syphilis is a bacterial STI, which spreads by moving into other organs and body systems, including the nervous system and the brain. Syphilis spreads through direct skin-to-skin contact by the bacterium Treponema pallidum, and the most common way to catch it is through unprotected sex with someone who is infected.