Contact lenses offer a fantastic alternative to glasses. They are a very convenient option for those who participate in sport providing better peripheral vision and avoiding damage to glasses. Contact lenses are often the preferred choice for cosmetic reasons. For some patients, they can provide far superior vision to glasses, particularly for patients with keratoconus or those who have had a corneal graft.
- For many people they are the best option especially with keratoconus or those who have had a corneal graft
- Used in orthokeratology to help reshape the cornea
- This practice specialises in fitting rigid lenses
- Usually disposable
- Very comfortable
- Suitable for a large range of prescriptions including astigmatism
Types of disposable lenses
- Daily disposables – ideal for occasional wearers and the best option to avoid eye infections
- Monthly or fortnightly disposable – available in almost all prescriptions. They require disinfection on nightly removal
- Extended wear – worn overnight for up to 30 days and nights then disposed of and replaced with a new set
Conventional soft lenses which are non-disposable are not commonly used these days. They are custom made for special types of prescriptions.
Orthokeratology (ortho-k) is the fitting of specially designed gas permeable contact lenses (RGP) that you wear overnight. While you are asleep, the lenses gently reshape the front surface of your eye (cornea) so you can see clearly the following day after you remove the lenses when you wake up.
Ortho-k lenses are prescribed for two purposes:
- To correct refractive errors
- To slow the progression of childhood myopia