These lens options are used for patients who need more than one optical correction. For example, for those patients who wear glasses for both distance and reading, or bifocal or varifocal glasses.
Monovision contact lenses are most commonly used. The process requires fitting the dominant (stronger) eye with your distance correction and your fellow eye with the reading correction.
This may sound ‘odd’ but your brain quickly learns and adapts to this and ‘chooses’ which eye to use for which task. This is not a conscious choice and usually only takes approximately a week to adapt to this.
You can get the above lenses in many variations and prescriptions including daily and monthly soft disposable lenses.
Multifocal / varifocal contact lenses
These lenses are also used in cases where both distance and near correction are required.
These are a newer design of lens and are not available in all prescriptions and disposable options. The suitability of this design can be decided by your optometrist. These lenses work by correcting both eyes with the distance and near element of your prescription.
There are advantages and disadvantages to using either ‘monovision’ or multifocal contact lenses and these vary depending on the patient’s requirements and his/her lifestyle.
The fitting process
The lens fitting process is the same as that for standard disposable contact lenses but there are extra factors to consider, such as how much reading or computer work is required for a particular patient. Some patients require an intermediate distance correction e.g. for reading music.
Other lens options
There are 3 options available for patients who need multiple optical corrections:
- Distance corrected contact lenses with the use of reading glasses as required
- Multifocal/varifocal contact lenses.