Intraoperative, Real-Time Aberrometry During Refractive Cataract Surgery With a Sequentially Shifting Wavefront Device

Krueger, Ronald R.; Shea, William R.; Zhou, Yan; Osher, Robert H.; Slade, Stephen; Chang, David F.

doi:10.3928/1081597x-20130819-04

Cited by 17 publications

(8 citation statements)

References 13 publications

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“…Before IWA can be used to guide the surgical plan, for example, for astigmatism correction during cataract surgery (as previously reported with a Talbot Moiré interferometry device7) or to generate constant dynamic data for intraoperative biometry,18 further efforts are needed to enhance the measurement precision and quality of IWA.…”

Section: Discussionmentioning

confidence: 99%

First clinical results on the feasibility, quality and reproducibility of aberrometry-based intraoperative refraction during cataract surgery

et al. 2014

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Section: Discussionmentioning

confidence: 99%

First clinical results on the feasibility, quality and reproducibility of aberrometry-based intraoperative refraction during cataract surgery

et al. 2014

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“…Before IWA can be used to guide intraoperative biometry planning,18 further studies are needed and more efforts are required to enhance the measurement precision and quality of IWA, especially when using multifocal or toric IOLs.…”

Section: Discussionmentioning

confidence: 99%

Intraoperative aberrometry-based aphakia refraction in patients with cataract: status and options

et al. 2016

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AimTo explore the application of intraoperative wavefront aberrometry (IWA) for aphakia-based biometry using three existing formulae derived from autorefractive retinoscopy and introducing new improved formulae. Methods In 74 patients undergoing cataract surgery, three repeated measurements of aphakic spherical equivalent (SE) were taken. All measurements were objectively graded for their quality and evaluated with the 'limits of agreement' approach. ORs were calculated and analysis of variance was applied. The intraocular lens (IOL) power that would have given the target refraction was back-calculated from manifest refraction at 3 months postoperatively. Regression analysis was performed to generate two aphakic SE-based formulae for predicting this IOL. The accuracy of the formulae was determined by comparing them to conventional biometry and published aphakia formulae. Results In 32 eyes, three consecutive aphakic measurements were successful. Objective parameters of IWA map quality significantly impacted measurement variability ( p<0.05). The limits of agreement of repeated aphakic SE readings were +0.66 dioptre (D) and −0.69 D. Intraoperative biometry by our formula resulted in 25% and 53% of all cases ±0.50D and ±1.00 D within SE target, respectively. A second formula that took axial length (AL) into account resulted in improved ratios of 41% and 70%, respectively. Conclusions A reliable application of IWA to calculate IOL power during routine cataract surgery may not be feasible given the high rate of measurement failures and the large variations of the readings. To enable reliable IOL calculation from IWA, measurement precision must be improved and aphakic IOL formulae need to be finetuned.

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“…Here, we outline that wavefront-guided devices do not stop with custom ablation. Wavefront devices have come a long way since the original bulky prototypes first used, and now researchers are experimenting with numerous exciting prospects [ 140 , 141 , 142 ]. Now that some of the devices are so small, the possibilities are virtually limitless.…”

Section: Wavefront Sensing Technology To Empower Clinical Ophthalmic ...mentioning

confidence: 99%

Advanced Optical Wavefront Technologies to Improve Patient Quality of Vision and Meet Clinical Requests

et al. 2022

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Adaptive optics (AO) is employed for the continuous measurement and correction of ocular aberrations. Human eye refractive errors (lower-order aberrations such as myopia and astigmatism) are corrected with contact lenses and excimer laser surgery. Under twilight vision conditions, when the pupil of the human eye dilates to 5–7 mm in diameter, higher-order aberrations affect the visual acuity. The combined use of wavefront (WF) technology and AO systems allows the pre-operative evaluation of refractive surgical procedures to compensate for the higher-order optical aberrations of the human eye, guiding the surgeon in choosing the procedure parameters. Here, we report a brief history of AO, starting from the description of the Shack–Hartmann method, which allowed the first in vivo measurement of the eye’s wave aberration, the wavefront sensing technologies (WSTs), and their principles. Then, the limitations of the ocular wavefront ascribed to the IOL polymeric materials and design, as well as future perspectives on improving patient vision quality and meeting clinical requests, are described.

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Intraoperative, Real-Time Aberrometry During Refractive Cataract Surgery With a Sequentially Shifting Wavefront Device

Cited by 17 publications

References 13 publications

First clinical results on the feasibility, quality and reproducibility of aberrometry-based intraoperative refraction during cataract surgery

First clinical results on the feasibility, quality and reproducibility of aberrometry-based intraoperative refraction during cataract surgery

Intraoperative aberrometry-based aphakia refraction in patients with cataract: status and options

Advanced Optical Wavefront Technologies to Improve Patient Quality of Vision and Meet Clinical Requests

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