Vision problems
There are many types of eye problems and visual disturbances. These include blurred vision, halos, blind spots, floaters, and other symptoms. Blurred vision is the loss of sharpness of vision and the inability to see small details. Blind spots (scotomas) are dark "holes" in the visual field in which nothing can be seen. For the most severe form of visual loss, see .

Glaucoma
Glaucoma involves increased fluid pressure inside the eye (), which damages the optic nerve and causes partial and can progress to .

Blepharitis
Blepharitis is an inflammation of the lash follicles at the eyelid margins, caused by excess growth of bacteria normally present on the skin.

Retinal detachment
Retinal detachment is a separation of the light-sensitive membrane in the back of the eye (the ) from its supporting layers.

Presbyopia
Presbyopia is an age-associated progressive loss of the focusing power of the lens. This results in difficulty seeing objects close-up.

Nearsightedness
Nearsightedness is an error of visual focusing that makes distant objects appear blurred.

Farsightedness
Farsightedness is difficulty seeing objects which are nearby.

Eyelid bump
Eyelid bump

Cataract
A cataract is a cloudy or opaque area in the lens of the eye.

Macular degeneration
Macular degeneration is a disorder that affects the macula (the part of the of the eye) causing decreased visual acuity and possible loss of central vision.

Keratoconjunctivitis sicca
Keratoconjunctivitis sicca