What is the contact disease of the eye that can lead to blindness?

Trachoma is a highly contagious bacterial infection caused by Chlamydia trachomatis. It is a significant public health problem in many developing countries and can lead to scarring of the eyelids and cornea, which can ultimately result in blindness if left untreated. The disease is commonly transmitted through direct contact with discharge from the eyes or nose of an infected person, as well as through environmental factors such as poor hygiene and crowded living conditions.

Understanding trachoma’s impact is crucial since it is not just an eye infection; it reflects broader issues of sanitation and healthcare access. Efforts to control trachoma focus on improving hygiene, increasing access to clean water, and providing education about the disease's transmission. In areas where trachoma is endemic, these measures can significantly reduce the incidence of blindness.

In contrast, other conditions such as conjunctivitis, glaucoma, and blepharitis do not typically lead to blindness in the same way that trachoma can. Conjunctivitis is an inflammation of the conjunctiva and is usually not sight-threatening, glaucoma is primarily an issue of increased intraocular pressure leading to optic nerve damage, but it can often be managed effectively, and blepharitis involves inflammation of the eyelid margins,