Optimizing intraocular lens power calculations in eyes with axial lengths above 25.0 mm

Wang, Li; Shirayama, Mariko; Jack, X; Kohnen, Thomas; Koch, Douglas D.

doi:10.1016/j.jcrs.2011.05.042

Cited by 211 publications

(175 citation statements)

References 18 publications

(27 reference statements)

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“…This was similar to our previous study that evaluated the accuracy of the OKULIX ray tracing software in eyes after LASIK [27]. Wang et al report that AL using the IOLMaster needs optimization for use in IOL calculations because of overestimation in eyes with long ALs [28]. We believe that if we were to optimize the AL using the IOLMaster using OKULIX ray tracing software, the prediction error may reduce the hyperopic shift.…”

Section: Discussionsupporting

confidence: 89%

Comparison of the accuracy of intraocular lens power calculations for cataract surgery in eyes after phototherapeutic keratectomy

et al. 2016

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Section: Discussionsupporting

confidence: 89%

Comparison of the accuracy of intraocular lens power calculations for cataract surgery in eyes after phototherapeutic keratectomy

et al. 2016

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“…In this regard, Kane et al[21] reported that the mean prediction error of the IOLMaster in eyes with an axial length of ≥26 mm (version 5.4) was 0.21 dpt using the Haigis formula, –0.20 dpt using the Barrett Universal II, and 0.392 dpt or 0.370 dpt as the MedAE. To reduce postoperative refractive error, Wang and colleagues[22, 23] proposed axial length correction formulas for the Holladay I, Haigis, SRK/T, and Hoffer Q formulas in eyes with an axial length of ≥25 mm. These hyperopic errors may be caused by overestimation of the axial length when the crystalline lens occupancy in the axial length is estimated as being less than the actual length.…”

Section: Discussionmentioning

confidence: 99%

Clinical Evaluation of a New Swept-Source Optical Coherence Biometer That Uses Individual Refractive Indices to Measure Axial Length in Cataract Patients

et al. 2019

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Backgrounds: Although the OCT biometer using individual refractive index is available, comparisons of measurement value and intraocular lens (IOL) power calculation error with other SS-OCT biometers are not known. Objectives: To compare the new SS-OCT biometer ARGOS (OCTB1), which uses individual refractive indices to measure axial length, with the IOLMaster 700 (OCTB2) and OA-2000 (OLCR), which use equivalent refractive index. Method: Six hundred and twenty-two eyes of 622 patients who had been diagnosed with cataract were enrolled in the study. Among the 158 eyes that had undergone cataract surgery, the postoperative refractive error was evaluated using the Haigis formula. Results: The axial length measured by the OCTB1 showed a proportional bias in comparison with the other two biometers and a fixed bias in eyes with an axial length ≥26 mm. No significant difference was found in the median absolute refractive prediction error (p = 0.3278). However, in eyes with an axial length ≥26 mm, the OCTB1 showed myopic error compared with the other two biometers (p < 0.0001). Conclusions: In eyes with long axial length, when the conventional IOL calculation was optimized with the equivalent refractive index-based instrument, we need to consider that IOL calculation using OCTB1 tends to cause slightly myopic refractive prediction error.

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“…These formulas tend to select IOLs of insufficient power, leaving patients with unwelcomed postoperative hyperopia [14,15].…”

Section: Why Is the Postoperative Refractive Predictive Error Higher mentioning

confidence: 99%

High myopia and cataract surgery

Chong

Mehta

2016

Current Opinion in Ophthalmology

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Improved predictive results is obtained with the Barrett Universal II (software constants), Haigis (ULIB), SRK/T, Holladay 2 (software constants), and Olsen (software constants) formulas in eyes with axial lengths greater than 26.0 mm and IOL powers greater than 6.0 D. In eyes with axial lengths greater than 26.0 mm and IOL less than 6.0 D, the Barrett Universal II formula (software constants) and the Haigis (axial length adjusted) and Holladay 1 formulas (axial length-adjusted) should be used.

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Optimizing intraocular lens power calculations in eyes with axial lengths above 25.0 mm

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 211 publications

References 18 publications

Comparison of the accuracy of intraocular lens power calculations for cataract surgery in eyes after phototherapeutic keratectomy

Comparison of the accuracy of intraocular lens power calculations for cataract surgery in eyes after phototherapeutic keratectomy

Clinical Evaluation of a New Swept-Source Optical Coherence Biometer That Uses Individual Refractive Indices to Measure Axial Length in Cataract Patients

High myopia and cataract surgery

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