A dual optical accommodating foldable intraocular lens Adult dating services washington
Crystalens HD was designed to restore the eye’s accommodation ability, which is reduced as presbyopia progresses.
In FDA studies, about 80 percent of people who received the Crystalens HD could see at the near vision equivalent of 20/20 after four months.
IOLs fall into different categories, including monofocal, multifocal, monovision, toric, silicone, blue-light, piggyback, and aspheric.
Monofocal lenses are the traditional IOLs that offer vision from only one distance, whether it’s far, intermediate or near.
They allow you to see at more than one distance without the need of eyeglasses or contact lenses.
There are different multifocal lenses available on the market: Acry Sof Re Stor uses a diffractive technology and a design that responds to the width of the eye’s pupil in order to provide near, intermediate, and distance vision.
A dual-optic single-piece foldable silicone lens was constructed based on these principles.
Subsequent initial clinical evaluation in 24 human eyes after phacoemulsification for cataract indicated mean 3.22 diopters of accommodation (range, 1 to 5 D) based on defocus curve measurement.
Studies show that 80 percent of people who have this type of lens implanted have had no need for eyeglasses or contact lenses.
Results: Ray tracing analysis indicated that a dual-optic design with a high plus-power front optic coupled to an optically compensatory minus posterior optic produced greater change in conjugation power of the eye compared to that produced by axial movement of a single-optic IOL, and that magnification effects were unlikely to account for improved near vision.
Finite element modeling indicated that the two optics can be linked by spring-loaded haptics that allow anterior and posterior axial displacement of the front optic in response to changes in ciliary body tone and capsular tension.
Unfortunately you must wear eyeglasses or contact lenses in order to be able to read, use a computer, or view objects in the middle distance, especially if you had been experiencing presbyopia (loss of clear close-up vision) before the cataract surgery.
Multifocal lenses, also known as accommodating lenses, are the newest type of IOL.