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The removal of the natural lens before it has developed cataract is referred to by numerous terms which include Clear Lens Extraction (CLE), Refractive Lens Exchange (RLE) and Presbyopic Lens Exchange (PreLex).
The surgery is identical to cataract extraction, but the primary aim is to reduce spectacle prescription and to restore the ability to read for near. Lens surgery is primarily most suitable for individuals over the age of 45 when there is always some early evidence of cataract.
The choice of lenses is the same as for cataract surgery, but most patients opt for either EDOF or trifocal lenses. It is essential to consult a surgeon who has been trained to use these lenses.
Monofocal IOL
These lenses correct only for distance or near. Usually used to correct for distance whether they are shortsighted or longsighted. They will require reading spectacles.
Dr Tint only uses the highest quality monofocal lenses on the market allowing his patients to achieve “HD” quality vision.
Extended Depth of Focus Lens (EDOF) IOL
These are new lenses are designed to give a more seamless visual transition from distance to near. They are a variant of multifocal lenses. One such IOL is the Tecnis Symfony lens. Dr Tint was the first in Edinburgh to implant this lens.
Trifocal IOL
These lenses are designed to all the greatest freedom from spectacles. They focus for distance, intermediate and near. There is a high success rate for total spectacle freedom.
Toric IOL
These IOLs are available in as monofocal, EDOF or trifocal and help to correct astigmatism. They allow for better vision without spectacles.
Blended Monovision
This is a concept whereby the dominant eye is made good for distance whilst the non-dominant eye is corrected to see intermediate/near. The difference between the two eyes are kept as small as needed to allow the patient to blend the two eyes to see both distance and near.
Download The Royal College of Ophthalmologists Len surgery patient information (PDF)
