Predicting pseudophakic refractive error: Interplay of biometry prediction error, anterior chamber depth, and changes in corneal curvature

Wallace, Henry B.; Misra, Stuti; Li, Sunny S.; McKelvie, James

doi:10.1016/j.jcrs.2018.06.017

Cited by 13 publications

(9 citation statements)

References 8 publications

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“…As found in our previous study [7], there is a hyperopic tendency at both postoperative assessments with the EDOF IOL (Fig. 4), which may be due keratometric changes or to the IOL moving posteriorly due to capsular contractions [18,19], and direct assessment of IOL shift would further help explain the cause. Adjustments have since been made to the biometry A-constants to optimize the postoperative refractive outcomes in our clinic.…”

Section: Discussionsupporting

confidence: 66%

Visual outcomes and patient satisfaction 1 and 12 months after combined implantation of extended depth of focus and trifocal intraocular lenses

et al. 2021

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Purpose To assess the 1-month and 12-month postoperative visual performance and subjective outcomes following combined implantation of an extended depth of focus (EDOF) intraocular lens (IOL) and a trifocal IOL. Methods The study enrolled consecutive patients undergoing refractive lens extraction or cataract surgery with combined implantation of an EDOF IOL (dominant eye) and trifocal IOL. Uncorrected (UDVA) and best-corrected (CDVA) distance visual acuities, uncorrected intermediate (UIVA) and near (UNVA) visual acuities, and subjective questionnaires were evaluated 1 month and 12 months postoperatively. Results The study enrolled 58 consecutive patients. Binocular UDVA, UIVA and UNVA were − 0.08 ± 0.07 logMAR, 0.15 ± 0.14 logMAR and 0.17 ± 0.11 logMAR at 1 month, compared to − 0.09 ± 0.06 logMAR (P = .323), 0.11 ± 0.10 logMAR (P = .030) and 0.13 ± 0.10 logMAR (P = 0.008) at 12 months. Satisfaction was high with 93.1% of patients fulfilled or more than fulfilled postoperatively, and 84.5% and 86.3% reported spectacle independence for near at the respective postoperative assessments. The mean daytime and nighttime quality of vision (QoV) scores were 9.12 ± 0.94 and 7.88 ± 1.74 at 1 month, compared to 9.24 ± 0.78 (P = .183) and 8.26 ± 1.38 (P = .043) at 12 months. Conclusions This IOL combination provides good unaided visual acuity at 1 and 12 months postoperatively, with high functional vision and postoperative satisfaction reported at 1 and 12 months. However, a significant improvement in overall nighttime QoV at the 12 months assessment was found.

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Section: Discussionsupporting

confidence: 66%

Visual outcomes and patient satisfaction 1 and 12 months after combined implantation of extended depth of focus and trifocal intraocular lenses

et al. 2021

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“…Wallace et al investigated keratometric changes after clear corneal incision cataract surgery and found a tendency for the cornea to steepen by an average of 0.11D between weeks 1 and 4 postoperatively. 4 Vass et al, however, found that changes in corneal topography between 1 week and 1 year after cataract surgery were negligible. 12 Information on this topic is limited particularly regarding changes that occur in the very early post-operative period.…”

Section: Discussionmentioning

confidence: 97%

“…Fluctuation in ACD after cataract surgery has been reported by other authors although the direction of IOL shift has been variable with some reporting an anterior (myopic) shift 7,8 instead of a posterior (hyperopic) shift. 4,8 Despite the uncertainty in direction of the shift, ACD fluctuation is likely a major contributor to changes in postoperative UCVA.…”

Section: Discussionmentioning

confidence: 99%

“…To accommodate this demand, surgeons employ detailed preoperative planning, including robust biometry measurements and the use of increasingly advanced formulas for IOL calculations such as the SRK/T, Holladay 1 and 2, Barrett, Olsen, Hill-RBF, and the Ladas Super Formula. 1 – 4 These and other formulas are continually being modified to refine refractive results based on factors such as axial length, corneal refractive power, and anterior chamber depth.…”

Section: Introductionmentioning

confidence: 99%

“…While numerous reports have been published correlating preoperative evaluation and IOL selection with visual outcomes, it is less clear how early post-operative UCVA is predictive of the final visual outcome. 3 , 4 The purpose of this study is to analyze the relationship between excellent UCVA on post-operative day 1 (POD1) after uncomplicated cataract surgery and final post-operative UCVA. Such knowledge would help cataract surgeons guide patient expectations more precisely during the post-operative period.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

<p>Predictive Value of Excellent Uncorrected Visual Acuity Post-Operative Day One After Cataract Surgery</p>

Young

Law

2020

OPTH

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Patients and physicians are often pleased when uncorrected visual acuity (UCVA) on post-operative day 1 (POD1) after cataract surgery is 20/20. Unfortunately, this UCVA does not always last. This article aims to investigate the relationship between excellent uncorrected visual acuity on post-operative day 1 and final post-operative UCVA after uncomplicated cataract surgery. Patients and Methods: The medical records of patients who had undergone uncomplicated cataract surgery between 2012 and 2017 were assessed. UCVA on POD1 and final UCVA were obtained for patients who had a final best-corrected visual acuity of 20/20 or better. Results: Of 309 patients with UCVA of 20/20 on POD 1, 62.4% maintained 20/20 and 87.4% maintained 20/25 or better as their final uncorrected visual outcome. Of 204 patients with UCVA of 20/25 on POD 1, 44.1% achieved 20/20 and 69.6% maintained 20/25 or better as their final uncorrected visual outcome. Patients with 20/20 UCVA on POD1 were more likely to have a better final UCVA compared with those who were 20/25 on POD1. Of the 531 patients with UCVA of 20/25 or better on POD1, 20% had final UCVA worse than 20/25 with 4% losing more than 2 lines for their final UCVA. Conclusion: The majority of patients with 20/20 UCVA on POD1 after cataract surgery maintained excellent UCVA as their final visual outcome. However, a significant percentage of these patients experienced a decrease in UCVA over the course of the postoperative period.

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Refractive predictability using two optical biometers and refraction types for intraocular lens power calculation in cataract surgery

Cheng

et al. 2020

Int Ophthalmol

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Predicting pseudophakic refractive error: Interplay of biometry prediction error, anterior chamber depth, and changes in corneal curvature

Abstract: The Universal II and RBF methods were better than SRK/T in medium length eyes (22 to 24.5 mm). It might be prudent to expect a progressive hyperopic shift in the 3 months after surgery because of posterior IOL migration.

Cited by 13 publications

References 8 publications

Visual outcomes and patient satisfaction 1 and 12 months after combined implantation of extended depth of focus and trifocal intraocular lenses

Visual outcomes and patient satisfaction 1 and 12 months after combined implantation of extended depth of focus and trifocal intraocular lenses

<p>Predictive Value of Excellent Uncorrected Visual Acuity Post-Operative Day One After Cataract Surgery</p>

Refractive predictability using two optical biometers and refraction types for intraocular lens power calculation in cataract surgery

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