Different types of eye diseases include glaucoma, age-related macular degeneration and conjunctivitis, according to MedicineNet. Other types of eye issues are uveitis, corneal ulcers and diabetic retinopathy.
Glaucoma refers to a group of eye diseases caused by elevated intra-ocular pressure within the eye. Optic nerves are affected by the increased eye pressure, and this can cause a loss of vision, says MedicineNet. There are two classifications of glaucoma, which are open-angle or angle-closure. Open-angle glaucoma is the most common form and is usually painless. Angle-closure glaucoma is known to occur suddenly and exhibit symptoms such as pain and redness in the eye.
The beginning phases of glaucoma rarely have symptoms. However, when the vision becomes affected, the damage is usually permanent, states MedicineNet. Eye drops, laser treatments or surgery help slow or stop the progression of glaucoma, but early detection is essential. African-Americans, the elderly and those with a family history of glaucoma are at a higher risk for developing this disease.
Age-related macular degeneration manifests in people over the age of 60 and destroys the macula over time. The macula is the part of the eye that helps with focus, explains MedicineNet. However, this disease rarely causes total blindness.