Corneal spherical aberration and its impact on choosing an intraocular lens for cataract surgery

Abstract

Customized selection of aspheric IOLs based on the eyes' corneal spherical aberration has no significant importance comparing their results with the non-selected group.

Objective Optical Quality in Eyes with Customized Selection of Aspheric Intraocular Lens Implantation

“…In this study, no significant differences in postoperative UCVA and BCVA were observed between the two groups, which were consistent with the findings of previous controlled studies related to customized selection [13,14,22,23]. The finding of the mean corneal SA at 6mm PD was comparable to that in the study by Beiko et al [2] (0.28μm vs 0.27μm), and the unchanged corneal SA after surgery indicated that a bias resulting from the surgical impacts on corneal SA could be avoided.…”

“…Previous non-controlled studies reported that applying a customized selection of aspheric IOL implantation based on corneal SA could precisely reduce the postoperative ocular SA closest to zero [11,12]. However, the current limited controlled studies merely measured SA or contrast sensitivity for assessing the visual quality, and there is still a lack of consensus whether optical quality following 4 a customized selection with a target ocular SA of zero differs from that following a non-customized selection [13,14]. In this study, we applied a random selection strategy in the control group, by which we aimed to replicate the aspheric IOL selection strategy that we have been using in actual clinical practice in the past.…”

<p>A Preliminary Comparative Study of Visual Performance Between Two Newly Commercially Available Monofocal Intraocular Lenses Implanted During Cataract Surgery</p>

“…When comparing our results with those ones from other studies with other widely used monofocal IOLs, we found comparable values about CS and VF-14. 15,16 This preliminary study validates the visual performance of either I-Stream H and CT Lucia 211P, and highlights their good profile of safety. This is a crucial aspect to consider when evaluating a new medical device introduced into the market.…”

Objective Optical Quality in Eyes with Customized Selection of Aspheric Intraocular Lens Implantation

“…The availability of various aspheric IOL designs has enabled the customized selection to precisely achieve a postoperative target ocular SA of zero, which has been considered to be the optimal SA value for producing the best optical quality and visual performance by some researchers [ 20,21]. However, there are few controlled studies on optical quality of customized selection with a target SA of zero and the conclusions are inconsistent [ 13,14]. The present study aimed to comprehensively compare the postoperative optical quality using a combination of Hartmann-shack wavefront aberrometer and double-pass instrument between customized and random selections of aspheric IOLs, which has been rarely applied in previous studies regarding the customized selection with a target ocular SA of zero.…”

“…Previous non-controlled studies reported that applying a customized selection of aspheric IOL implantation based on corneal SA could precisely reduce the postoperative ocular SA closest to zero [ 11,12]. However, the current limited controlled studies merely measured SA or contrast sensitivity for assessing the visual quality, and there is still a lack of consensus whether optical quality following a customized selection with a target ocular SA of zero differs from that following a non-customized selection [ 13,14]. In this study, we applied a random selection strategy in the control group, by which we aimed to replicate the aspheric IOL selection strategy that we have been using in actual clinical practice in the past.…”