The cataract lens implants give a much higher level of optical quality and lifestyle convenience than the thick glasses so we always implant an intraocular lens at the time of cataract surgery if it is safe to do so.
During WWII, Sir Harold Ridley, was caring for a pilot with a small piece of a plane’s PMMA plastic windshield forced inside his eye.
Since the lens is monofocal, the light can only be bent to one focus point at a time.
With monofocal IOLs, the light is bent by the lens so that it will form a focus point on the retina of the eye.
If a lens implant is not used the eye must be brought into focus with either a spectacle lens or contact lens. A spectacle lens will be thick, heavy and restrict the field of vision.
A contact lens has to be looked after and taken on and off the eye.
provides approximately one diopter of monocular accommodation which allows for near, intermediate, and distance vision without spectacles.
Careful preoperative evaluation and sound clinical judgement should be used by the surgeon to decide the risk / benefit ratio before implanting a lens in a patient.
Unlike most other IOLs, the AO IOL optic has hinges connecting it to the haptic; please see adverse events section below for more information.
Do not resterilize this intraocular lens by any method.
The incidence of adverse events experienced during the clinical trial was comparable to or lower than the incidence reported in the historic control (“FDA grid”) population. Vaulting is a post-operative adverse event where the AO IOL optic hinges move into and remain in a displaced configuration.
If vaulting occurs, please see Directions for Use for a detailed listing of symptoms, information regarding diagnosis, potential causes, and sequelae.
A surgeon can choose an IOL that focuses light best coming from distant objects, or a stronger powered IOL that focuses light better from near objects.