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Quantifying metamorphopsia with M-CHARTS in patients with idiopathic macular hole

Authors Wada I, Yoshida S, Kobayashi Y, Zhou Y, Ishikawa K, Nakao S, Hisatomi T, Ikeda Y, Ishibashi T, Sonoda KH

Received 27 June 2017

Accepted for publication 30 August 2017

Published 20 September 2017 Volume 2017:11 Pages 1719—1726

DOI https://doi.org/10.2147/OPTH.S144981

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Lucy Goodman

Peer reviewer comments 3

Editor who approved publication: Dr Scott Fraser

Iori Wada, Shigeo Yoshida, Yoshiyuki Kobayashi, Yedi Zhou, Keijiro Ishikawa, Shintaro Nakao, Toshio Hisatomi, Yasuhiro Ikeda, Tatsuro Ishibashi, Koh-hei Sonoda

Department of Ophthalmology, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan

Purpose: The purpose of this study was to determine the degree of metamorphopsia using M-CHARTS™ in patients with idiopathic macular hole before and after pars plana vitrectomy and internal limiting membrane (ILM) peeling.
Patients and methods: The records of 22 eyes of 22 patients with a full-thickness macular hole who underwent pars plana vitrectomy and ILM peeling were reviewed. All patients underwent a complete ophthalmic examination including spectral-domain optical coherence tomography (OCT). Horizontal metamorphopsia (MH) and vertical metamorphopsia (MV) scores were determined using M-CHARTS at the same time. The time course of changes in metamorphopsia and the relationship between best-corrected visual acuity (BCVA) and OCT parameters were assessed.
Results: Sealing of the macular hole was noted in all eyes after surgery. BCVA improved significantly from 1 month after surgery (P<0.001). The MV score was significantly higher than the MH score before surgery (P<0.05) and improved significantly from 1 month after surgery (P<0.03). The MH score improved significantly at 6 months after surgery (P<0.001). The postoperative MV and MH scores became closer to one another from 1 month after surgery. Moreover, the MV score was higher than the MH score at all postoperative assessments. There was a significant correlation between the MV and MH scores at all follow-up assessments. There was no significant correlation between BCVA and the MV or MH score at any follow-up assessment.
Conclusion: The satisfaction of the patients with macular hole after surgery cannot be necessarily measured by BCVA alone, because M-scores were not correlated to BCVA in postoperative evaluation. Therefore, evaluation of the MV and MH scores can be an independent treatment outcome in addition to BCVA.

Keywords: macular hole, metamorphopsia, optical coherence tomography

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