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BMC Ophthalmology
Published in: BMC Ophthalmology 1/2018

Open Access 01-12-2018 | Research article

Changes in anterior chamber volume after implantation of posterior chamber phakic intraocular lens in high myopia

Authors: Yi Zhu, Haobin Zhu, Yan Jia, Jibo Zhou

Published in: BMC Ophthalmology | Issue 1/2018

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Abstract

Background

The present study aimed to assess changes in, and the factors that influence, anterior chamber volume (ACV) after implantable contact lens (ICL) implantation in high myopia eyes using a Pentacam.

Methods

The study sampled 26 high myopia patients (45 eyes) who were treated with ICL implantation. These patients were followed for an average of 4.28 months postoperatively. ACV was measured with a Pentacam preoperatively and at 3 months postoperatively. The data were analyzed by paired samples Wilcoxon signed-rank test. Generalized estimating equation (GEE) model adjusting within-patient intereye correlations in addition to Pearson’s and Spearman’s correlation tests were performed to determine associations.

Results

The mean ACV was 198.33 ± 33.08 mm3 before surgery and 118.65 ± 17.70 mm3 after surgery. A significant decrease of 79.68 mm3 (40.18%) (Z = 5.841, P <  0.001) was detected. Positive correlations were found between ACV changes and ICL central vault (r = 0.528, P <  0.001) and preoperative anterior chamber depth (ACD) (r = 0.665, P <  0.001). There were positive correlations between postoperative ACV and postoperative anterior chamber angle (ACA) at 3:00 o’clock (r = 0.448, P = 0.002) and at 9:00 o’clock (r = 0.405, P = 0.006). GEE regression model showed that postoperative ACV significantly positively correlated with preoperative ACV (P = 0.002), ACD (P = 0.002) and horizontal ACA (P = 0.005) and negatively correlated with ICL central vault (P <  0.001).

Conclusion

Complementary to vault and ACD, ACV is a sensitive parameter with certain value of preoperative assessment and postoperative monitoring in ICL implantation.
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Metadata
Title
Changes in anterior chamber volume after implantation of posterior chamber phakic intraocular lens in high myopia
Authors
Yi Zhu
Haobin Zhu
Yan Jia
Jibo Zhou
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Ophthalmology / Issue 1/2018
Electronic ISSN: 1471-2415
DOI
https://doi.org/10.1186/s12886-018-0830-2

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