What is aspheric UV absorbing IOL?

eye. There is a possibility that IOL could possibly be placed incorrectly or could move within the attention. This may bring about less improvement or a reduction in vision as the corneal astigmatism has not been fully corrected, or it could cause other visual symptoms. The safety and effectiveness of AcrySof® UV-Absorbing IOLs is not established in patients with certain eye conditions, such as glaucoma or diabetic retinopathy .

Despite the benefits of blue light filtering, concerns were raised that could negatively affect visual performance after cataract surgery . Specifically, controversy remains as to ultimate best corrected visual acuity , contrast sensitivity, color vision and glare. In recent years, several studies were performed to test visual function with blue light-filtering IOLs.

Light Adjustable Lens

Studies indicate that blue light could be harmful to the retinal pigment epithelial cells and epidemiological research suggests a correlation between excessive contact with blue light and the incidence of age-related macular degeneration . The Asphericity quality of the IOL plays an important role in the achievement of the best possible optics for patients. Patients who utilize it are guaranteed quality results because of the features it has. Aspheric lenses are particularly significant because they help with the reduced amount of spherical aberrations. Moreover, they help with the improvement of contrast sensitivity. A great way by which this quality will come in handy is whenever a patient is reading or performing a task in a place where there is dim light.
The Tecnis aspheric IOL has -0.27 µm of spherical aberration to compensate for the spherical aberration on the cornea, thereby providing an improved image contrast and improving vision in low light situations, such as night driving. One kind of higher order aberration common to cataract patients is spherical aberration, that may result in a gradual reduction in vision acuity and function. These lenses are flatter at the edges and give exceptional vision quality. Asphericity gives aberration free vision along with excellent contrast sensitivity.
Globally, cataract is among the most serious blinding diseases . Modern cataract surgery is routinely combined with the implantation of an intraocular lens . UV light-filtering lenses have already been the dominant IOLs found in modern cataract surgery because the mid-1980 s due to growing evidence that ultraviolet light caused photic retinopathy and cystoid macular edema . Recently there has been support for increasing the absorption spectrum of IOLs. The rationale is that UV light-filtering IOLs do not protect the retina from phototoxic damage by high-energy, short-wavelength blue light (approximately 400–480 nm) that is thought to donate to the pathogenesis of age-related macular degeneration , . The healthy human crystalline lens gradually becomes yellow as part of the normal ageing process.

• Also, when patients are driving at night, patients with this particular lens have a higher capacity for reaction time.
• The lower selection of IOL will not preserve this function well.
• AcrySof IQ IOL includes a greater chance of delivering such positive outcomes in comparison to other IOLs.

Even though it includes a soft material, the lens, and also its haptics, contains shape memory. You will notice that because the unfolding process continues, the IOL will need up its optimal structure. Another major benefit of the design and mechanics of the particular IOL is that it allows for the realization of precise centration.

Hydrophilic Foldable Pmma Iol With Dual Haptic And Aspheric Surface

Age-related increases in crystalline lens transmittance can lead to decreased transmission of shorter wavelengths ,52 suggesting that variation in the density of the crystalline lens could contribute to individual differences in what lengths a given individual can see. Wooten and Hammond were the first ever to consider such factors also to carefully model how the macular pigments might increase visual range.53 They argued that, all things being equal, macular pigment would increase visual range as a linear function of the amount. Eight studies , , –, , , described the patients’ subjective satisfaction of visual quality between the blue light-filtering IOL and UV light-filtering IOL after surgery, and another studies did not. Therefore, we have no idea the existence of other potential factors. These IOL aren’t only themselves free of spherical aberrations but will also be able to correct a few of the higher order spherical aberrations present naturally in the attention. These higher order spherical aberrations can be found to some variable extent in all of us.
Figure 5 Blue light filtration can enhance visibility under hazy conditions. Although the stimuli such experiments are highly specific and don’t seem to be applicable to many examples of everyday vision, this simple stimulus arrangement is, in fact, highly generalizable.

• which brings the common eye to +0.074 μm.
• The AcrySof PanOptix Trifocal IOL was approved by the FDA and launched in the usa in August.5 The PanOptix is the only trifocal lens obtainable in the United States for patients undergoing cataract surgery.
• The MC X11 ASP was developed to give patients the best image quality, as expressed by the point spread function .
• The AcrySof construction ensures reliable positioning and stability in the eye thereby improving the predictability of the refractive result.

If you notice any decrease in night vision clarity before IOL care, this can be only partially corrected by standard monofocal IOLs. The analysis reported that visual range measured under blue haze conditions was strongly correlated with macular pigment density.55 The effects of BLF IOLs on visual range have not been assessed. To conclude, our systematic review, along with other clinical reports, shows that the blue light-filtering IOLs had postoperative visual performance much like the UV light-filtering IOLs, but conclusions regarding color vision remain inconsistent. In this paper, we conduct a systematic review and meta-analysis of published randomized controlled trials to assess the visual performance of blue light-filtering IOLs and UV light-filtering IOLs after cataract surgery.

Why My Choice May Be The Acrysof Iq Iol

Some people will undoubtedly be happier having both eyes corrected for optimum distance vision. This affords the very best balance between the two eyes, and the best depth perception. Others will prefer having one eye adjusted for optimum distance viewing and the other eye adjusted for intermediate or near range viewing. LISA means for light intensity distribution 65% far and 35% near; independent from pupil size; smooth refractive/diffractive surface profile; and optimized aspheric optic.