The STD that often leads to blindness is syphilis, although chlamydia and even herpes can result in severe eye damage and blindness.
Syphilis can cause ocular syphilis and even "uveitis", which is severe inner eye inflammation that can lead permanent loss of vision "blindness".
Certain strains of chlamydia can also cause severe conjunctivitis and corneal scarring, while the specific related bacterial strains of Chlamydia cause trachoma, which is a leading global cause of blindness.
Herpes Simplex virus can also infect the cornea and your retina and cause painful inflammation, recurrent sores and even lasting tissue damage.
And even HIV/AIDS weakens your immune system, which allows secondary infections such as cytomegalovirus to destroy your retina and can lead to blindness.
The STD that causes blurry vision is often chlamydia, although syphilis, herpes and even gonorrhea can also cause blurry vision, although these STD infections often affect your eyes when bodily fluids are transferred from your genitals or someone else's genitals to your eyes.
Both Chlamydia and Gonorrhea can cause severe conjunctivitis or pink eye and the thick mucous discharge and pus can lead to blurry vision, along with redness, swelling and light sensitivity.
Untreated syphilis infections can also lead to ocular syphilis and cause inner eye inflammation "uveitis", floaters, pain and even blurred vision.
The herpes simplex virus can also cause painful corneal infections "herpes keratitis", which results in tearing, severe light sensitivity and blurry vision.
And even HIV/AIDS can cause blurry vision as HIV/AIDS weakens your immune system and allows secondary opportunistic retinal infections like cytomegalovirus to cause blurriness, floaters, or vision loss.
The STD that causes pink eye is also commonly chlamydia.
Chlamydia is an STD that is caused by Chlamydia trachomatis, which leads to red, swollen eyes and discharge that develops slowly.
Other STDs that causes pink eye are gonorrhea, herpes and even syphilis, which can lead to pink eye when infected bodily fluids touch your eyes.
Gonorrhea is caused by Neisseria gonorrhoeae, which leads to severe redness, swelling and thick pus like discharge.
Herpes is caused by the herpes simplex virus and leads to painful sores, redness and sensitivity to light.
And syphilis is caused by the bacterium Treponema pallidum, which can also cause inflammation in various parts of your eye, which includes your conjunctiva.
These infections that lead to pink eye spread from transfer from genitals by touching infected genital fluids with your hands and then rubbing or touching your eyes.
And even childbirth, where you can pass these STD infections from an untreated parent to a newborn during delivery of the baby, which leads to neonatal conjunctivitis.
Chlamydia eyes also look very similar to that of the common pink eye and causes redness, sticky mucus discharge as well as swollen eyelids.
The Chlamydia in the eye often affects just one of your eyes at first and can also last much longer than standard pink eye if it's not treated properly.
Chlamydia in the eye is also known as chlamydial conjunctivitis.
The signs and symptoms of Chlamydia in the eyes include red and pink tissues, discharge and crust, swelling, bumpy inner eyelids, extra tearing and sensitivity and swollen lymph nodes.
With chlamydia in the eyes, the white part of your eye and the inner lining of your eyelids turn bright red or pink as a result of heavy inflammation.
And thick white, yellow or mucous like discharge builds up and often seals the eyelids shut while you sleep at night.
Your eyelids also often become puffy, swollen and tender to the touch.
And small, grainy bumps or follicles can also form on the inside lining of your upper and lower eyelids.
With Chlamydia of the eyes your eyes may also water constantly and hurt when you look at bright lights also known as photophobia.
And a small, sometimes tender lymph node also often pops up right in front of your ear on the side of the eye that is infected with Chlamydia.
Chlamydia of the eye also does not clear or go away by itself and so you need to see a doctor to get treatment.
If you have any eye infection that does not clear or go away on it's own within 2 weeks you need to see a doctor for further diagnosis and treatment.
As an infection of the genital area, chlamydia may actually be asymptomatic in as high as 96% of cases, though can be associated with serious complications such as infertility.
As an infection of the eyes, it can cause a severe conjunctivitis, resulting in scarring and potential blindness.
Chlamydial eye infections (chlamydial conjunctivitis) require a combination of oral antibiotics and sometimes topical ointments to completely clear the bacteria from the body.
Standard over-the-counter pink eye drops will not cure this infection.
Recommended Medical Treatments for Chlamydial eye infections include:
Azithromycin: Taken as a single oral dose of 1,000 mg (1 gram).
Doxycycline: Taken orally as 100 mg twice a day for 7 days (avoided during pregnancy).
Erythromycin: Used for newborns or pregnant individuals via specialized oral or topical regimens.
Topical Ointments: Eye ointments like erythromycin or tetracycline may be added alongside pills to soothe local inflammation.