CONTACT LENSES GROUPS

Most contact lenses fall into one of two groups:

• Soft lenses made of a very soft and flexible, water-absorbing material that conforms to the eye shape
• Hard lenses made of rigid gas-permeable plastic that cover only part of the cornea.

Contact lenses can correct most refractive errors including myopia (main use), hyperopia, astigmatism and presbyopia. Contact lenses also have certain therapeutic uses and are needed for bandage lenses, or even in some cases for drug delivery. Opaque contact lenses may be used to hide disfigurement of the cornea such as scars.There are cosmetic contact Lenses to change the colour of the eye.

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Many lens designs are available to correct different types of vision problems:

• Spherical contact lenses come in the typical, rounded design, which can correct myopia (nearsightedness) or hyperopia (farsightedness).
• Toric contact lenses are the correct choice for astigmatism, as well as for myopia and hyperopia
• Bifocal contact lenses contain different zones for near and far vision, to correct presbyopia

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CONTACT LENSES Replacement Schedule

• • Yearly
  • Monthly
  • Daily