The Variation of Choroidal Thickness and Refractive Error after Cataract Surgery

Hyun Cheol Roh; Choul Yong Park; Jong-Hyun Oh

doi:10.3341/jkos.2016.57.6.924

Journal List > J Korean Ophthalmol Soc > v.57(6) > 1010609

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Roh, Park, and Oh: The Variation of Choroidal Thickness and Refractive Error after Cataract Surgery

Original Article

J Korean Ophthalmol Soc 2016;57(6):924-929.

Published online: 25 September 2016

DOI: https://doi.org/10.3341/jkos.2016.57.6.924

The Variation of Choroidal Thickness and Refractive Error after Cataract Surgery

Hyun Cheol Roh, MD, Choul Yong Park, MD, PhD, Jong-Hyun Oh, MD, PhD

Department of Ophthalmology, Dongguk University Ilsan Hospital, Goyang, Korea

Address reprint requests to Jong-Hyun Oh, MD, PhD Department of Ophthalmology, Dongguk University Ilsan Hospital, #27 Dongguk-ro, Ilsandong-gu, Goyang 10326, Korea Tel: 82-31-961-7394, Fax: 82-31-961-7977 E-mail: blueretinaoh@gmail.com

Received 15 October 2015 Revised 11 January 2016 Accepted 25 February 2016

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To evaluate the effect of cataract surgery on subfoveal choroidal thickness (SCT) and investigate the relationship between the variation of SCT and refractive error.

Methods

We retrospectively reviewed the medical records of 47 patients (47 eyes) who underwent uneventful phacoemulsification cataract surgery from March 2012 to February 2014. SCTs were measured using spectraldomain optical coherence tomography performed before surgery and at 1 month, 3 months and 6 months postoperatively. We investigated the differences in target refraction (TR) and postoperative spherical equivalent (SE), intraocular pressure (IOP) and central macular thickness (CMT) at all follow-ups.

Results

Compared with preoperative measurements, SCT showed a significant increase of 5.9 ± 13.3 μ m at postoperative 1 month and 7.6 ± 18.1 μ m at postoperative 3 months (p = 0.004 and p = 0.006, respectively), but no significant differences at post-operative 6 months (p = 0.104). The correlation between the variation of SCT and the differences in postoperative SE and TR were not significant at 1 month and 6 months, but were positively significant at 3 months (r = 0.310, p = 0.034). The variation of SCT showed no significant correlations with the postoperative change in IOP and CMT.

Conclusions

SCT significantly increased up to 3 months after cataract surgery. The variation of SCT may affect the post-operative refractive error.

Keywords: Cataract surgery, Choroidal thickness, Optical coherence tomography, Phacoemulsification, Refractive error

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Figure 1.

Changes in subfoveal choroidal thickness after cataract surgery. The asterisks (*) indicate significant changes compared with preoperative values (paired t-test).

Figure 2.

Scatterplots showing the correlation between difference in the postoperative spherical equivalent (SE) and target refraction (TR) and the change in subfoveal choroidal thickness (SCT). (A) At 1 month after surgery. (B) At 3 months after surgery. (C) At 6 months after surgery.

Figure 3.

Scatterplots showing the correlation between post-operative changes in intraocular pressure (IOP) and subfoveal choroidal thickness (SCT). (A) At 1 month after surgery. (B) At 3 months after surgery. (C) At 6 months after surgery.

Figure 4.

Scatterplots showing the correlation between post-operative changes in central macular thickness (CMT) and subfoveal choroidal thickness (SCT). (A) At 1 month after surgery. (B) At 3 months after surgery. (C) At 6 months after surgery.

Table 1.

Preoperative and postoperative measurements

Parameter	Preoperative (n = 47)	1 month (n = 47)	p-value^*	3 months (n = 47)	p-value^*	6 months (n = 26)	p-value^*
SCT (μ m)	228.7 ± 43.0	234.5 ± 41.7	0.004	236.2 ± 42.4	0.006	233.9 ± 39.8	0.104
CMT (μ m)	241.1 ± 21.1	253.7 ± 23.0	<0.001	257.9 ± 24.9	<0.001	249.9 ± 21.2	<0.001
IOP (mm Hg)	12.8 ± 2.7	10.8 ± 2.3	<0.001	10.6 ± 2.2	<0.001	10.1 ± 2.6	<0.001

Values are presented as mean ± SD unless otherwise indicated.

SCT = subfoveal choroidal thickness; CMT = central macular thickness; IOP = intraocular pressure.

^* Compared with preoperative value using paired t-test.

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