AKA Clear lens extraction or Refractive lens exchange
Refractive lens replacement, exchange or clear lens extraction is the name given to the procedure whereby the natural lens is removed from the eye and replaced with an artificial lens of a different focusing power. The operation itself is very much like a cataract operation, with the main difference being that the natural lens being removed is not cloudy.
Lens replacement surgery is often used as an alternative to laser eye surgery and is designed to eliminate the need for glasses or contact lenses. Instead of reshaping the cornea, the lens inserted is equivalent to an external contact lens.
The surgery is suitable for patients with moderate to severe hyperopia (far-sightedness) or myopia (short-sightedness) where laser surgery would be inappropriate. It can also be used to correct presbyopia, which is long-sightedness caused by loss of elasticity of the lens usually occurring in adults from the age of 40 upwards.