Conventional hydrophobic acrylic IOLs develop various levels of glistenings post-implantation due to uncontrolled water sorption into IOL polymers. The first generation hybrid polymers have demonstrated a more controlled water uptake and much improved resistance to glistenings formation. However, IOLs made from these materials have poor mechanical properties and require pre-hydration and storage in saline. Enova is the first glistenings-free hydrophobic acrylic IOL that does not require pre-hydration and storage in saline solution. Enova is packaged dry and has excellent optical and mechanical properties for micro incision cataract surgery.
A Higher Abbe Number for less visible light dispersion
Enova has a high Abbe Number value which provides less light dispersion in the visible region and enhanced light transmission.
|Excellent Biomechanical Properties
Enova has a unique combination of biomechanical properties making it the perfect choice for micro-incision surgery. An extremely low glass transition temperature (Tg) of -2˚C coupled with an optimized modulus of elasticity affords a high level of flexibility and controlled unfolding.
An Optimized Refractive Index
The refractive index of the Enova material was optimized to produce thinner lenses for smaller incision without the undesirable effects of glare and reflectance observed for IOLs with too high of an index of refraction.
|The unique composition of Enova’s material shows complete absence of glistenings even under extreme conditions.
|What are glistening?
Glistening are known as fluid-filled micro-vacuoles that are formed within the intraocular lens optic when the IOL is in an aqueous environment. They cause light scattering and may affect the quality of vision by reducing contrast sensitivity and induce undesirable optical artifacts.
|The glass transition temperature (Tg) of a polymer is the temperature above which the polymer becomes soft and pliable. With a Tg of -2 ⁰C , Enova IOL is easily foldable at temperatures well below operating room temperatures and unfolds rapidly and gently. As such, no warming or special conditioning is required.
Aspheric Optic for Better Contrast Sensitivity
The Enova IOL has an aspheric surface with a total residual asphericity of -0.10 µm. This design allows for a balanced control of the spherical aberrations of the IOL and the positive aberrations of the cornea. This design provides improved contrast sensitivity.
All Square Enhanced Edge for lower PCO rate
The Enova IOL is designed with a 360⁰ enhanced square edge for the prevention of posterior capsule opacification.
Largest Diopter Range Available On The Market
Enova offers the widest available diopter range of -5.0D to 42.0D with 0.5D increment.
Advanced Haptic Design for Better Capsular Bag Stability
Extensive compression simulation studies have demonstrated that the haptic design of Enova IOL affords excellent stability and centration in the capsular bag.
Capsular Bag Compression Simulation
The Story of Enova
Glistenings were first reported in the early 1990's and have been extensively researched since then. The ophthalmic industry has expended considerable efforts to develop IOL polymers which do not exhibit glistenings. The first glistenings-free HAIOL was developed in 2003 and received FDA and worldwide approvals.
Although these lenses are performing well worldwide, they have major handling and incision size limitations. Intense efforts were focused on developing a HA IOL that solves all of these problems while retaining the absence of glistenings.
In the last few years, our team of international engineers initiated efforts to develop the most advanced HA IOL technology available to date. The efforts culminated in the introduction of Enova HA IOL, the first and only glistenings-free HA IOL designed for micro-incision and packaged dry.