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, Pedro; Almendral-Gómez, Jaime; Garzón, Nuria; Ruiz‐Medrano, Jorge; Fernández-Pérez, Cristina; Martínez-de-la-Casa, J.M.; Díaz-Valle, D.

doi:10.1016/j.jfo.2016.09.003

Cited by 22 publications

(34 citation statements)

References 23 publications

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“…Unlike their study, we observed a significant increase in CCT and the difference between two studies might be attributable to topical drops. Arriola‐Villalobos et al also observed an increase in CCT obtained with IOL Master 700 after tropicamide installation. The mechanism of the increase in CCT remains unclear.…”

Section: Discussionmentioning

confidence: 85%

“…No significant difference was observed between pre‐dilation and post‐dilation WTW values in this study. Diversely, Arriola‐Villalobos et al found significant difference in WTW obtained with IOL Master 700 before and after pupil dilation with tropicamide. We provided pupil dilation by cyclopentolate but, in terms of WTW, the disagreement between studies is not attributable to either cyclopentolate or tropicamide.…”

Section: Discussionmentioning

confidence: 98%

“…In a recent study, the effect of pupil dilation on biometric measurements using SS‐OCT‐based biometer was evaluated . Researchers obtained pupil dilation with tropicamide drops and the study concluded that pupil dilation affects some IOL Master 700 measurements.…”

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confidence: 99%

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The effect of cycloplegia on biometric measurements using swept‐source optical coherence tomography‐based biometry

Özçalışkan

Yenerel

2019

Clinical and Experimental Optometry

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Background: To evaluate the effect of pupil dilation obtained with cyclopentolate on biometric measurements using swept-source optical coherence tomography biometry. Methods: This study involved 63 eyes of 63 healthy volunteers. After ophthalmic examination, biometry measurements of the participants were obtained with IOL Master 700 (Carl Zeiss Meditec AG, Jena, Germany). After pre-dilation measurements were taken, subjects were given one drop of cyclopentolate hydrochloride ophthalmic solution three times at 10-minute intervals. When cycloplegia had been achieved, a dilated fundus examination was conducted and post-dilation measurements were taken with IOL Master 700. The biometric parameters were recorded and SPSS Software 22.0 was used for statistical analysis. Results: There was a significant increase in anterior chamber depth, anterior aqueous depth and central corneal thickness values after pupil dilation (p < 0.05). A significant decrease was observed in lens thickness values after cycloplegia (p < 0.05). There were no statistically significant differences between pre-dilation and post-dilation axial length, keratometry (K1, K2) and white-to-white values (p > 0.05). Conclusion: This study demonstrated there is no significant difference in axial length and keratometry measurements using swept-source optical coherence tomography biometry before and after cycloplegia.

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 98%

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The effect of cycloplegia on biometric measurements using swept‐source optical coherence tomography‐based biometry

Özçalışkan

Yenerel

2019

Clinical and Experimental Optometry

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“…It is controversial whether pupil dilation influences WTW. While Huang et al 10) and Arriola-Villalobos et al 15) have insisted that WTW is affected by pupil dilation, the opposite result has been reported by Wang et al 8) Although the researchers attributed the discrepancy in the influence of pupil dilation on WTW to the examination error and imaging artifact, the real mechanism remains unknown.…”

Section: Resultsmentioning

confidence: 97%

“…3) Many studies have investigated the influence of pupil dilation on these biometric measurements. 8,[10][11][12][13][14][15][16] In a clinical setting, pupil dilation is a vital process of preoperative examination. Therefore, it is important to analyze its possible influence on PPR and recommended IOL power in third, fourth, and new generation IOL power calculation formulas, and to investigate the correlation between variables.…”

Section: Resultsmentioning

confidence: 99%

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

Teshigawara

Meguro

Mizuki

2020

Preprint

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Background: We investigated the effect of pupil dilation on predicted postoperative refraction (PPR) and recommended intraocular lens (IOL) power calculated using three different generations of IOL power calculation formulas: Barrett Universal II (Barrett) (new generation), Haigis (4th generation), and SRK/T (3rd generation). Methods: This retrospective study included 150 eyes. All variables were measured and calculated using a ZEISS IOL Master 700. The following variables were measured before and after dilation: anterior chamber depth (ACD), lens thickness (LT), white-to-white (WTW). PPR and recommended IOL power were calculated by Barrett, Haigis, and SRK/T IOL calculation formulas. The change in each variable before and after dilation, and correlations between all changes were analyzed using the Wilcoxon signed-rank test and the Spearman’s rank-order correlation test, respectively. The influence of pupil dilation on recommended IOL power calculated by each formula was also analyzed. Results: The mean absolute change (MAC) in PPR before and after dilation was highest in Barrett, followed by Haigis and SRK/T. Significant differences were found among each MACs (P < 0.0001). Significant changes were observed before and after dilation in ACD and LT (P < 0.0001) but not in WTW. In Barrett and Haigis, there was a significant positive correlation between change in PPR and change in ACD (P < 0.0001) and a negative correlation between change in PPR and change in LT (P < 0.0001). Correlations were strongest in Barret followed by Haigis, especially in LT. Change in PPR in Barrett also demonstrated a significant positive correlation with change in WTW (P = 0.022). The recommended IOL power using Barrett and Haigis changed before and after dilation in 23.3% and 19.3% cases; SRK/T showed no change. Conclusions: In PPR and recommended IOL power, pupil dilation influenced Barrett most strongly, followed by Haigis and SRK/T. Given the stronger correlation between the change in PPR in Barrett and the change in ACD, LT, and WTW, the change of ACD, LT, and WTW is more important to the influence of dilation on Barrett. The influence of dilation on each formula and variable, including ACD, LT, and WTW, is key to improving IOL calculation.

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Influence of Anterior Chamber Depth, Lens Thickness, and Corneal Diameter on Intraocular Lens Power Calculation

Ferreira,

Campos

2024

Intraocular Lens Calculations

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The main IOL power formulas are described along with the input variables used by each of them to predict the IOL position and the refractive outcomes reported by published studies. An overview of measurements techniques of anterior chamber depth, lens thickness, and corneal diameter is given. The impact of these variables is illustrated for the Barrett Universal II, EVO, Haigis, Hill-RBF, Hoffer Q, Holladay 1, Holladay 2, Kane, Olsen, PEARL-DGS, and SRK/T formulas. With formulas that do not take the anterior chamber into account, eyes with a deeper anterior chamber are more likely to experience a hyperopic outcome compared to eyes with a shallow anterior chamber. With most formulas, a tendency toward a myopic shift occurs with thin lenses and toward a hyperopic shift with thick lenses. Corneal diameter has a minimal effect on IOL power calculation.

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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

Cited by 22 publications

References 23 publications

The effect of cycloplegia on biometric measurements using swept‐source optical coherence tomography‐based biometry

The effect of cycloplegia on biometric measurements using swept‐source optical coherence tomography‐based biometry

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

Influence of Anterior Chamber Depth, Lens Thickness, and Corneal Diameter on Intraocular Lens Power Calculation

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