Effect of Pharmacologic Pupil Dilation on OLCR Optical Biometry Measurements for IOL Predictions

Arriola‐Villalobos, Pedro; Díaz-Valle, D.; Garzón, Nuria; Ruiz‐Medrano, Jorge; Fernández-Pérez, Cristina; Alejandre-Alba, Nicolás; García‐Feijoó, Julián

doi:10.5301/ejo.5000332

Cited by 23 publications

(57 citation statements)

References 20 publications

(27 reference statements)

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“…Thus, no significant change in AL is produced in response to pupil dilation using both the IOLMaster 500 © and LENSTAR © [6][7][8][9][10]. The slight, though significant, increase in CCT observed in our study is consistent with the findings of other authors, who noted significant increases in CCT after pupil dilation with tropicamide eye drops [14,15].…”

Section: Discussionsupporting

confidence: 90%

“…No clear cause was identified for this effect. A deeper anterior chamber after pupil dilation has been described for the IOLMaster 500 © [8] and LENSTAR © [9,10]. This deeping of the anterior chamber seems to be secondary to a widening of the anterior chamber angle, as reported previously in one study which evaluated the effect of tropicamide 1% on anterior segment geometry with ultrasound biomicroscopy [16].…”

Section: Discussionsupporting

confidence: 55%

“…These investigations detected no significant differences in AL or MK data, whereas both studies found that ACD was significantly greater in response to pupil dilation. Other variables, such as LT, CCT or WTW, were not significantly modified after pupil dilation [10].…”

Section: Discussionmentioning

confidence: 69%

“…In addition, in the only one study in which the ACD was measured, this variable was found to increase after pupil dilation. Two furthers studies have also addressed the influence of pupil dilation on the accuracy of LENSTAR © measurements [9,10]. These investigations detected no significant differences in AL or MK data, whereas both studies found that ACD was significantly greater in response to pupil dilation.…”

Section: Discussionmentioning

confidence: 99%

“…In the only study in which a change in MK measured by optical biometry was detected after pupil dilation, the authors attributed this to chance [6]. Effectively, other optical biometry studies have revealed no change in corneal curvature after pupil dilation [7][8][9][10] and Effect of pupil dilation on measurements and IOL power calculation with IOLMaster700 5 …”

Section: Discussionmentioning

confidence: 99%

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Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Arriola‐Villalobos

Almendral-Gómez

Garzón³

et al. 2016

Journal Français d'Ophtalmologie

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Please cite this article in press as: Arriola-Villalobos P, et al. Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer. J Fr Ophtalmol (2016) Please cite this article in press as: Arriola-Villalobos P, et al. Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer. J Fr Ophtalmol (2016) Procedures. -Eighty-one eyes of 81 patients evaluated for cataract surgery were prospectively examined using the IOLMaster 700 © before and after pupil dilation with tropicamide 1%. The measurements made were: axial length (AL), central corneal thickness (CCT), aqueous chamber depth (ACD), lens thickness (LT), mean keratometry (MK), white-to-white distance (WTW) and pupil diameter (PD). Holladay II and SRK/T formulas were used to calculate IOL power. Agreement between measurement modes (with and without dilation) was assessed through intraclass correlation coefficients (ICC) and Bland-Altman plots. Results. -Mean patient age was 75.17 ± 7.54 years (range: 57-92). Of the variables determined, CCT, ACD, LT and WTW varied significantly according to pupil dilation. Excellent intraobserver correlation was observed between measurements made before and after pupil dilation. Mean IOL power calculation using the Holladay 2 and SRK/T formulas were unmodified by pupil dilation.Conclusions. -The use of pupil dilation produces statistical yet not clinically significant differences in some IOLMaster 700 © measurements. However, it does not affect mean IOL power calculation. © 2016 Elsevier Masson SAS. All rights reserved. MOTS CLÉSCohérence optique swept-source ; Dilatation pupillaire ; Biométrie ; Cataracte ; IOLMaster 700 © Résumé Propos. -Déterminer si la dilatation pupillaire modifie les mesures biométriques et le calcul de la puissance de l'implant intraoculaire obtenus avec un nouveau biomètre optique basé sur la tomographie par cohérence optique swept-source (IOLMaster 700 © ; Carl Zeiss Meditec, Jena, Allemagne) Méthodes. -Nous avons évalué prospectivement 81 yeux de 81 patients prévus pour la chirurgie de la cataracte au moyen du biomètre IOLMaster 700 © , avant et après dilatation pupillaire avec tropicamide 1 %. Les mesures réalisées ont été : longueur axiale (AL), épaisseur cornéenne centrale (CCT), profondeur de la chambre antérieure (épaisseur cornéenne exclue) (ACD), épaisseur cristallinienne (LT), kératométrie moyenne (MK), distance blanc à blanc (WTW) et diamètre pupillaire (PD). Les formules Holladay II et SRK/T ont été employées pour calculer la puissance de l'implant intraoculaire. Nous avons évalué la concordance entre les deux méth-odes de mesure (sous dilatation pupillaire et sans) au moyen des coefficients de corrélation intraclasse (ICC) et des graphiques de Bland-Altman. Résultats. -La moyenne d'âge des patients était de 75,17 ± 7,54 ans (intervalle : 57-92). Parmi les variables mesurées, la CCT,...

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Arriola‐Villalobos

Almendral-Gómez

Garzón³

et al. 2016

Journal Français d'Ophtalmologie

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Evaluating relaxed ciliary muscle tone in presbyopic eyes

Özyol

2017

Graefes Arch Clin Exp Ophthalmol

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The effect of pupil dilation on AL-Scan biometric parameters

et al. 2015

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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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Effect of Pharmacologic Pupil Dilation on OLCR Optical Biometry Measurements for IOL Predictions

Abstract: The use of pupil dilation does not seem to influence measurements and IOL predictions made using this OLCR optical biometer.

Cited by 23 publications

References 20 publications

Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Evaluating relaxed ciliary muscle tone in presbyopic eyes

The effect of pupil dilation on AL-Scan biometric parameters

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