Bacterial conjunctivitis is a bacterial infection of the transparent membrane that covers the white part of the eye and lines the inner surfaces of the eyelids.
Floppy eyelid syndrome is an eyelid disorder characterized by loose upper eyelids that easily turn inside out, especially during sleep
Lagophthalmos is the incomplete closure of the eyes. A common type is nocturnal lagophthalmos, the incomplete closure of the eyes while sleeping.
An allergen is a substance or material that can cause allergic reaction in the body.
Giant cell conjunctivitis is a type of allergic conjunctivitis mostly seen in people that wear contact lenses. It occurs due to allergic reaction to either the contact lens solution or debris trapped between the contact lens and the eye.
This is a type of allergic keratoconjunctivitis common in people with atopic conditions like rhinitis (itchy nose), eczema and asthma. This is similar to vernal keratoconjunctivitis but in this case, the victim is genetically predisposed to be allergic to a specific allergen.
Vernal keratoconjunctivitis is the inflammation of the conjunctiva and the cornea caused by exposure to allergens such as pollens, dust, and chemicals.
Fusional vergence is the reflex movement of both eyes in a way that enables the images from the two eyes to fuse into one, resulting in single binocular vision.
Phoria, is a misalignment of the eye that is not apparent when the two eyes are in use.