Ophthalmology is the study of medical conditions relating to the eye. An ophthalmologist is a specialist in ophthalmology. Most common diseases of eye includes:
Cataract
Glaucoma
Macular degeneration
Diabetic retinopathy
Dry eyes
Strabismus (misalignment/deviation of eyes)
Proptosis (bulged eyes)
Excessive tearing (tear duct obstruction)
Uveitis
Eye tumors.