Type of contact lens | Use |
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Soft | - Most common lens type
- Disposable contact lenses: usage time one day
- Short-term contact lenses: usage time about 1 month
- Long-term contact lenses: usage time about 6 months
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Hard | - Oxygen-permeable (RGP, i.e. rigid gas permeable) contact lenses
- Can be used if soft contact lenses cannot correct an asymmetric refractory error or if soft lenses are contraindicated.
- Fitting such lenses is more demanding than fitting soft contact lenses, and it will take more time to get used to them.
- Usage time longer than for soft contact lenses
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Specific-purpose lenses | - Astigmatism: toric soft contact lenses
- Presbyopia: multifocal contact lenses
- For example, treatment of abnormal structures in the anterior eye, such as aniridia or sequelae of eye injuries
- Special lenses for the treatment of dry eye
- Special lenses for the treatment of keratoconus
- Coloured contact lenses for changing the colour of the iris
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