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The Crystalens accomplishes this by use of two small hinges, which allow the lens to move forward and backward slightly inside the eye.
By doing so, the lens can change its power in the eye, similar to the process of accommodation of the eye’s natural lens.
This guidance represents the view of NICE, arrived at after careful consideration of the evidence available.
When exercising their judgement, healthcare professionals are expected to take this guidance fully into account, and specifically any special arrangements relating to the introduction of new interventional procedures.
Multifocal s provide multiple distances at which the patient can see clearly: distance, intermediate, and near.
These lenses may eliminate the need for glasses for vision correction; however, they can reduce contrast sensitivity which is already an issue for many glaucoma patients.
But often, when patients have complex prescriptions like combined myopia and presbyopia, ophthalmologists find that IOLs – especially accommodating ones – don’t focus as well as expected.
Commissioners and/or providers have a responsibility to implement the guidance, in their local context, in light of their duties to have due regard to the need to eliminate unlawful discrimination, advance equality of opportunity, and foster good relations.
Nothing in this guidance should be interpreted in a way that would be inconsistent with compliance with those duties.
Some patients with multifocal is an Assistant Professor in the Department of Ophthalmology and Vision Sciences at the University of Toronto, in Ontario, Canada. Teichman, MD is the Chief Resident in the Division of Ophthalmology, Department of Surgery at Mc Master University, Hamilton in Ontario, Canada.
A third lens, the accommodating lens, provides a multifocal effect allowing for both near and distance focus.