Purpose: The final refraction after intraocular lens (IOL) implantation remains a challenge in the management of paediatric cataracts. No consensual guidelines exist for the choice of IOL power. The aim of this study was to validate a method of IOL power calculation by evaluating the final refractive error in all patients with IOL implantation operated at our institution.
Methods: We retrospectively studied all children under 7 years of age who underwent cataract surgery with IOL implantation at our institution between 2010 and 2015. Intraocular lens (IOL) power was calculated as follows: After B-scan determination of the emmetropic IOL power, a reduction of 40%, 35%, 30%, 25%, 20%, 15%, 10% and 5% was applied to children 0-3, 3-6, 6-12, 12-18, 18-24, 24-30, 30-36, 36-48 months, respectively. The following data were collected: follow-up, age at surgery, uni- or bilaterality, implanted IOL power and final refraction.
Results: During this period, 81 children (125 eyes) met the inclusion criteria with a median follow-up of 60 months (36-97). The median age at surgery was 6.61 months (0.76-48). We included 52 children with bilateral cataract (96 eyes) and 29 children with unilateral cataract (29 eyes). The mean implanted IOL power was 23.3 ± 4.6 diopters (D). The mean spherical equivalent at last follow-up was 0.07 ± 3.5 D.
Conclusion: Our undercorrection formula for IOL implantation after congenital cataract surgery leads to long-term refractive results globally close to emmetropia.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/aos.15134 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Refractive Prediction Accuracy Using Intraoperative Aberrometry versus Barrett True-K Formula Following Corneal Refractive Surgery.
Clin Ophthalmol
December 2024
Alcon Vision LLC, Fort Worth, TX, USA.
Purpose: To compare the refractive prediction accuracy of the Optiwave Refractive Analysis (ORA) SYSTEM with the Barrett True-K (BTK) formula in calculating intraocular lens (IOL) power in eyes that underwent cataract surgery after previous myopic photorefractive keratectomy (PRK) or laser-assisted in situ keratomileusis (LASIK).
Methods: This retrospective study evaluated patients aged ≥22 years with prior myopic PRK or LASIK who underwent unilateral or bilateral cataract removal and monofocal IOL implantation using the ORA SYSTEM at 177 sites in the United States. Two datasets were analyzed: All Eyes (ie, all eligible eyes) and First Surgery Eyes (ie, each patient's first implanted eye).
Comparison of Optical Biometry Data Measured with Lenstar and Anterion Devices.
Cesk Slov Oftalmol
December 2024
Objective: The aim of this study is to compare the results of preoperative biometric data measured with optical biometers of different generations in patients with cataract. Lenstar optical biometry is based on the principle of optical low-coherence reflectometry (OLCR), and Anterion on swept-source optical coherence tomography (SS-OCT).
Material And Methods: A total of 200 eyes (103 patients) were included in a prospective study at the Faculty Hospital in Trenčín the period from June 2023 to January 2024.
Evaluation of prediction errors in nine intraocular lens calculation formulas using an explainable machine learning model.
BMC Ophthalmol
December 2024
Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.
Background: The purpose of the study was to evaluate the relationship between prediction errors (PEs) and ocular biometric variables in cataract surgery using nine intraocular lens (IOL) formulas with an explainable machine learning model.
Methods: We retrospectively analyzed the medical records of consecutive patients who underwent standard cataract surgery with a Tecnis 1-piece IOL (ZCB00) at a single center. We calculated predicted refraction using the following IOL formulas: Barrett Universal II (BUII), Cooke K6, EVO V2.
Refractive change at 5 years in the Toddler Aphakia and Pseudophakia Study (TAPS).
Ophthalmology
December 2024
Department of Ophthalmology, Mayo Clinic, Rochester, MN; Department of Ophthalmology and Visual Neurosciences, Minneapolis, University of Minnesota, MN;. Electronic address:
Article Synopsis
- The study focuses on refractive changes observed in children aged 5 years who underwent cataract surgery with intraocular lens placement before age 2.
- It analyzed data from 96 children, comparing results between unilateral and bilateral cataract cases, as well as those operated on at different ages (1 to <7 months vs. 7-24 months).
- The findings indicated that children operated on between 1 to <7 months experienced significantly more refractive change compared to those operated on later, suggesting careful consideration is needed when selecting lens power and target refraction for younger patients.
Fluctuations of Anterior Chamber Depth and Astigmatism in Pseudophakic Eyes.
Clin Ophthalmol
December 2024
Department of Refractive Surgery, Eye Clinic Sistina Oftalmologija, Skopje, 1000 Republic of North Macedonia.
Purpose: To explore the significance of changes in anterior chamber depth (ΔACD) and astigmatism between 4 and 8 weeks following uneventful phacoemulsification.
Patients And Methods: Anterior chamber depth (ACD, mm), autorefractometry and subjective refraction were monitored in pseudophakic eyes implanted with non-toric IOLs (group 1, SA60AT, n=36; group 2, SN60WF, n=34; group 3, ICBOO, n=16) and phakic control group (n=30, group 4a, for ACD and autorefractometry) over four weeks. Changes in subjective refractions were compared with repeatability in normal phakic eyes (n=30, group 4b).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!