A synthetic lens that is used to correct vision problems such as farsightedness, short shortsightedness and astigmatism; it sits on the surface of the eye.

They are categorized into: -

  1. Soft contact lenses: Soft, flexible and water absorbent that fits the eye shape

They are disposable and has a life span of either one day, 2-weeks or one month

Soft contacts can also be found for an extended wear.

  1. Hard contact lenses: Made of a rigid gas-permeable plastic that cover only part of the cornea.They are recommended for irregular corneas and keratoconus patients.

Advantages of contact lenses

  • They give you more natural vision than glasses
  • They rotate with the eye which limits vision blockage i.e. peripheral vision
  • In case of rain, they don’t fog or get wet


Disadvantages of contact lenses

  • Poor hygiene will lead to eye infections
  • Doesn’t fit those with high astigmatic prescriptions since the vision always gets blurry when the lenses rotate on the surface of the eyes
  • People having difficulty to read closer objects will have to use reading glasses to assist in near work