Crystalens accommodating lens reviews dating stories blog
Multifocal patients often complain of seeing glare and halos, especially at night, in the first few months after surgery.As a result, considerable time and money are being invested in the development of IOLs that reduce or eliminate the problems of current multifocals.A drawback to most mechanical accommodating IOLs is that the ciliary muscle may not be strong enough to power the lens to provide an in-focus image at every distance.As a result, currently approved accommodating lenses typically can’t provide a full range of vision.That is not enough to give patients good distance and near vision, although it may suffice for good distance and intermediate vision.Some critics claim that a single-optic IOL can’t possibly move enough with the eye to produce a substantial change in power.As the internal muscles of the eye contract during periods of reading, the visual portion of the lens is moved forward shifting ones’ focus to the near tasks.Currently, the first and only FDA approved accommodating IOL is the Crystalens.
This design strategy trades off some of the benefits of seeing through a single zone in order to have a greater range of focus. While many multifocal patients can read without glasses, their distance vision may not be as sharp as it might be with a monofocal IOL.
Like the lens of a camera, the eye’s natural lens can change its focus and allow us to see objects up close, a process called “accommodation.” During cataract surgery, the natural lens is replaced by an artificial lens, and traditionally these artificial IOLs have been limited to allowing clear vision at only one distance.
This technology is known as a non-accommodating “monofocal” IOL.
Typically, the eye’s “focusing” or ciliary muscle powers the movement or shape change.
Currently approved accommodating designs cause less loss of contrast sensitivity and are less likely than multifocal IOLs to produce glare and halos.