ArticleInternational ophthalmology2016
The effect of pupil dilation on AL-Scan biometric parameters.
Article in International ophthalmology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 18 citations in OpenAlex.
- Effect of pupil dilation on spherical and toric IOL calculations using a swept source OCT ocular biometer.International ophthalmology · 2026Observational
- Comparative analysis of pupillometry in two scheimpflug-based measurement systems.Documenta ophthalmologica. Advances in ophthalmology · 2025Article
- Effect of mydriatic eye drops (combined 0.8% tropicamide and 5% phenylephrine) on the measurements of corneal parameters using Pentacam.Indian journal of ophthalmology · 2023Article
- [Dioptric power of intraocular lens and dilatation in patients with cataract].Revista medica del Instituto Mexicano del Seguro Social · 2022Article
- Effect of pupil dilation on biometry measurements and intraocular lens power in eyes with high myopia.Frontiers in medicine · 2022Article
- Effects of pupillary dilation on ocular optical biometry outcomes in pediatric patients.Arquivos brasileiros de oftalmologia · 2020Article
- Influence of pupil dilation on the Barrett universal II (new generation), Haigis (4th generation), and SRK/T (3rd generation) intraocular lens calculation formulas: a retrospective study.BMC ophthalmology · 2020Article
- Evaluating relaxed ciliary muscle tone in presbyopic eyes.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2017Observational
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The purpose of this study was to investigate the effects of pupil dilation on the parameters of the AL-Scan (Nidek Co., Ltd, Gamagori, Japan). We compared the measurements of axial length (AL), anterior chamber depth (ACD), central corneal keratometry reading, pupil diameter, and intraocular lens (IOL) power of 72 eyes of 72 healthy volunteers and patients scheduled for cataract surgery before and 45 min after instillation of cyclopentolate hydrochloride 1 % using the AL-Scan. Intraobserver repeatability was assessed by taking three consecutive recordings of ACD and AL. Only ACD readings were significantly different between predilation and postdilation (P < 0.001). The difference of the other measurements between two sessions was not statistically significant (P > 0.001). Only two cases in the study demonstrated changes in IOL power higher than 0.5 D. The intraobserver repeatability of both devices was good (CV values for ACD and AL were 0.16 and 0.20 %, respectively). Dilated pupil size did not affect the measurement of IOL power using the A-Scan optical biometer, but increase in ACD after dilation should be taken into account when performing refractive surgeries in which ACD is very important such as phakic anterior chamber IOL implantation.
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