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Dr. Andrew Rynne
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Article Home Eye Problems Contact lens

Contact lens

By :
Contact lens are small plastic discs which are used to correct eye problems such as nearsightedness, farsightedness, presbyopia, or astigmatism.

How to wear them?

  • Wash your hands with soap and water
  • Stand in front of the mirror and open the lens box
  • Using the right index finger pick up the lens
  • Place them on the inner surface of the lower eyelid
  • Gently move them into place on the transparent part of the eye ball
  • Repeat the same for the other eye
  • Make sure the lenses for different eyes aren’t interchanged as they are custom made

What are the types?

Hard contact lens

  • Conventional hard (polymethyl methacrylate) lenses
  • Rigid gas-permeable lenses

Soft contact lens

  • Daily-wear lenses
  • Extended-wear lenses
  • Disposable lenses

Bifocal contact lenses provide correction for both nearsightedness and presbyopia. Bifocal lenses for both near and distance vision on each lens.

Who are suitable for wearing contact lens?

  • People who have difficulty in seeing things at a distance
  • People having difficulty in reading small texts of newspaper
  • People with a strong motivation to adjust and willing to tolerate minor discomfort and maintain hygiene
  • People who perform work or play sports in which glasses are inconvenient or dangerous

Who are not suitable for wearing contact lens?

  • Those who not able to care for the lenses properly.
  • Those having difficulty in handling lenses.
  • Those with certain medical conditions such as diabetes, hyperthyroidism.
  • Those having frequent allergies, asthma etc…

Does it benefit?

For people with both nearsightedness and astigmatism, rigid gas-permeable lenses may be the best choice.

People with severe nearsightedness or both nearsightedness and astigmatism may get the best vision correction from gas-permeable lenses.

What are the risks?

  • Dry eyes
  • Problems with the cornea, such as swelling and hazy vision
  • Allergic reactions
  • Deposits on the lenses
  • Eye inflammation
  • Eyelid inflammation