The most common types of diseases in ophthalmology are: 1. conjunctivitis, especially bacterial conjunctivitis, the main symptoms of this type of disease include eye congestion, red eyes, and a lot of eye discharge, especially in the morning when the eyelids are often covered with some secretions, paste, and even difficulty in opening the eyes, which is a manifestation of bacterial conjunctivitis. 2. there are also some patients with blepharitis, which is more serious The symptoms are similar to those of conjunctivitis, but there is eyelid congestion and even some crusting. 3, there is also a group of diseases related to the tear sac, such as chronic dacryocystitis, and acute dacryocystitis, there will be some secretions, and these secretions due to sleep overnight without cleaning, will accumulate on the side of the eye, and in the morning up to feel more eye droppings.