Contact lenses are thin plastic lenses that are placed on the film of tears on the front of your eye. It provides a safe and effective way to correct vision when used carefully with proper lens wear habits.
Contact lenses are used to correct similar conditions that spectacles can to correct myopia (short-sightedness), hyperopia (far-sightedness), astigmatism (distorted vision) and presbyopia (old-age vision). Contact lenses may also be used in eye diseases where an uneven cornea blurs vision, such as in patients with keratoconus.
There are various types of contact lenses:
Soft Contact Lenses
Majority of contact lens wearers in Singapore use soft lenses, which are made of plastic materials with high water content. As a result, these lenses are soft and flexible.
Different lenses with varying lens replacement schedules are available. Disposable soft contact lenses are discarded and replaced. They are convenient and reduce the chance of allergic reactions and accumulation of deposits on the lens surface.
Users should replace their contact lens according to manufacturers’ recommendations. Non-disposable (conventional) soft contact lens options also exist.
Toric Contact Lenses
Toric lenses correct astigmatism. They are available in both rigid and soft materials.
Rigid Gas Permeable Lenses
Newer rigid plastic lenses are combined with gas permeable materials to allow oxygen in the air to pass directly through the lens. These lenses allow more oxygen to reach the cornea compared with soft lenses.
Contact lenses can cause a variety of problems ranging from mild to sight-threatening complications. These include:
Stop wearing your contact lenses if you experience discomfort and see an eye specialist if you experience eye redness, a drop in vision or pain in the eyes.
Below are some 'Dos' and 'Don'ts' of Contact Lens wear:
Dos
Do not
Arrange for regular eye check-ups (at least once a year) with an eye-care professional.
Check with your eye-care professional or doctor before you apply any eye drops, as any eye drops, including non-prescription ones, can interact with all types of contact lenses.
Remove the contact lens immediately should your eye turn red or uncomfortable while wearing contact lenses. If this persists, consult your eye-care professional or doctor immediately.
Click here to access our Find A Doctor directory for a list of doctors treating this condition across our NUHS institutions.