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A model for predicting sulcus-to-sulcus diameter in posterior chamber phakic intraocular lens candidates: correlation between ocular biometric parameters

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Abstract

Purpose

The aim of this study was to determine the correlation between ocular biometric parameters and sulcus-to-sulcus (STS) diameter.

Methods

This was a cross-sectional study of preoperative ocular biometry data of patients who were candidates for phakic intraocular lens (IOL) surgery. Subjects underwent ocular biometry analysis, including refraction error evaluation using an autorefractor and Orbscan topography for white-to-white (WTW) corneal diameter and measurement. Pentacam was used to perform WTW corneal diameter and measurements of minimum and maximum keratometry (K). Measurements of STS and angle-to-angle (ATA) were obtained using a 50-MHz B-mode ultrasound device. Anterior optical coherence tomography was performed for anterior chamber depth measurement. Pearson’s correlation test and stepwise linear regression analysis were used to find a model to predict STS.

Results

Fifty-eight eyes of 58 patients were enrolled. Mean age ± standard deviation of sample was 28.95 ± 6.04 years. The Pearson’s correlation coefficient between STS with WTW, ATA, mean K was 0.383, 0.492, and − 0.353, respectively, which was statistically significant (all P < 0.001). Using stepwise linear regression analysis, there is a statistically significant association between STS with WTW (P = 0.011) and mean K (P = 0.025). The standardized coefficient was 0.323 and − 0.284 for WTW and mean K, respectively. The stepwise linear regression analysis equation was: (STS = 9.549 + 0.518 WTW − 0.083 mean K).

Conclusion

Based on our result, given the correlation of STS with WTW and mean K and potential of direct and essay measurement of WTW and mean K, it seems that current IOL sizing protocols could be estimating with WTW and mean K.

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Acknowledgements

The authors thank all the subjects who contributed in clinical data gathering (Mrs. Mohammadinia) and statistically consultation (Prof. A. Feizi) but not complete authorship criteria in this study.

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Authors and Affiliations

  1. Department of Ophthalmology, Isfahan University of Medical Sciences, Isfahan, Iran

    Mohammad Ghoreishi

  2. Parsian Vision Science Research Institute, Isfahan, Iran

    Mohammad Ghoreishi

  3. Department of Ophthalmology, Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

    Mehdi Abdi-Shahshahani, Alireza Peyman & Mohsen Pourazizi

  4. Department of Ophthalmology, Feiz Hospital, Modares St., Isfahan, Iran

    Mehdi Abdi-Shahshahani

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  1. Mohammad Ghoreishi
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  2. Mehdi Abdi-Shahshahani
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  3. Alireza Peyman
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  4. Mohsen Pourazizi
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Correspondence to Mehdi Abdi-Shahshahani.

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The authors declare that they have no conflict of interest.

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Ghoreishi, M., Abdi-Shahshahani, M., Peyman, A. et al. A model for predicting sulcus-to-sulcus diameter in posterior chamber phakic intraocular lens candidates: correlation between ocular biometric parameters. Int Ophthalmol 39, 661–666 (2019). https://doi.org/10.1007/s10792-018-0859-5

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  • DOI: https://doi.org/10.1007/s10792-018-0859-5

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