Accomodating iol Chatsex web
24-Aug-2017 11:39
This article will explore the available accommodative technologies under these 3 headings including any limitations concerning lens excursion and accommodative amplitude and examine the potential impact of these IOLs on cataract and refractive surgeons and patients.The Morcher Bio Com Fold Type 43E, Human Optics 1 CU, Lenstec Tetra Flex, and eyeonics crystalens are examples of single-optic IOLs.The eyeonics crystalens is a 10.5 mm, hinged plate haptic silicone lens with a 4.5 mm optic (Figure 2).It is the only accommodating IOL that has been approved by the FDA.Accommodating IOLs may very well transform the practice of cataract and refractive lens surgery.This is because accommodative IOLs can potentially provide unaided near visual acuity without the optical aberrations and image degradation that may accompany multifocal IOL implantation.
In a similar study as that performed with the Morcher Bio Comfold IOL, median anterior movement of the Human Optics 1CU after pilocarpine 2% instillation was calculated to result in a refractive change of no more than 0.5 D in most patients 2004;115-1521).
Single-optic, accommodating IOLs function by changing their position in the capsular bag during accommodative effort with a resulting increase in the effective power but not the inherent power of the lens.
The limitations of these IOLs stem from their inability to move significantly enough to generate large amplitudes of accommodative power that would yield consistently acceptable near visual acuities.
Not only will this enhance cataract surgery results, but it will also enable refractive surgeons to offer their patients a procedure that is unhindered by the restrictions of corneal refractive surgery and presbyopia.
Accommodating lenses can currently be classified into 3 categories: (1) single-optic, (2) dual-optic, (3) and deformable optic IOLs.
During accommodative effort, the 2 lens components increase their distance from each other, resulting in increased effective power of the overall lens.
