Myopia or Nearsightedness: A common condition in which the eye sees near but not far.
Hyperopia or Farsightedness: A common condition in which the eye sees far but not near.
Presbyopia: Aging causes our eyes lenses to lose their flexibility so that after forty reading becomes more difficult.
Astigmatism: Virtually everyone experiences this to some degree. An imperfect curvature of our eyes distorts vision at all distances.
Keratoconus: A progressive disease that thins the cornea, causing it to bulge into a cone shape that blurs vision.
Glaucoma: When the eyes are unable to properly drain their fluid, pressure builds up and blind spots develop in the peripheral (side) vision.
Macular degeneration: Yellow deposits form behind the retina and gradually destroy the central vision.
Conjunctivitis or Pink Eye: The whites (conjunctiva) of the eyes become inflamed.
Dry eye: Insufficient and/or poor quality of tears cause a lack of lubrication and nourishment for the eyes.
Allergies: The cause of itchy, red eyes for millions of people.
Cataracts: Heredity, injury, disease, and mostly, age causes the eyes lenses to gradually become cloudy.
Amblyopia or lazy eye: Develops in childhood. For various reasons, the brain favors only one eye. This may lead to eyes that are misaligned (cross-eyed).