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  1. Melanoma is the most common type of eye cancer and starts in the melanocytes where pigment is made.10
  2. A large pupil is called mydriasis and can be caused by injury to the sphincter muscle.10
  3. If a person has one blue eye and one brown eye, it may be normal and a result of genetics.10
  4. Albino eyes appear very light or pink due to a lack of pigmentation in the anterior border layer, but normal pigmentation in the posterior epithelium in back of the iris.10
  5. With Fuch’s Heterochromic Iridocyclitis, the disturbed eye is often light blue and inflamed.10
  6. Cataracts occur when the lens located behind the iris and in front of pupil becomes cloudy from hardened minerals clumping together.10
  7. Xanthelasma is a condition in which lipid deposits appear in the tissues of the iris stroma.10
  8. With Wilson’s Disease, a golden to greenish brown ring appears at the edge of the iris in the cornea, caused by a build-up of copper in the liver and blood.10
  9. The lens in the eyes of children is strong and hard, while the lens in older people becomes hardened and weak.10
  10. A person who has a defect in the pupil called Coloboma should get lots of sunshine and wear sunglasses as little as possible.10
Back to: Chapter 20-Eye Diseases, Injuries, & Surgeries