Comparative analysis of tabular and software methods of quantitative assessment of metamorphopsia

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Abstract

BACKGROUND: Identifying and evaluating the severity of patients complaints of metamorphopsia is an important component of the pre- and postoperative management of patients with vitreomacular interface conditions. To diagnose metamorphopsia, the Amsler grid is used, which allows to detect changes, but does not allow to quantify them. The authors of this article have developed a special software program for quantitative evaluation of metamorphopsia.

AIM: The aim is to comparatively evaluate tabular and programmatic methods of metamorphopsia assessment.

MATERIALS AND METHODS: The study involved 36 patients (36 eyes) divided into two groups: “macular hole” (20 patients, 20 eyes) and “epiretinal fibrosis” (16 patients, 16 eyes). Quantitative assessment of metamorphopsia was performed by two methods: tabular — using printed tables, which are an analog of M-CHARTS, and software — using the developed computer program.

RESULTS: When comparing the integral parameters of the two methods using the Bland–Altman analysis, the results were highly comparable: the mean value of the difference between the PMs determined by the tabular and program methods was only –0.020°; the 95% confidence interval ranged from 0.277° to 0.235°, with 34 (94.4%) cases out of 36 falling within this range.

CONCLUSIONS: The program and tabular methods of metamorphopsia examination are interchangeable and provide reasonably accurate quantification of metamorphopsia. The developed program is available on-line (https://mntk.ru/specialists/nauka-sotr/diag_meta/) and can be recommended for widespread clinical use.

About the authors

Alexander A. Shpak

S.N. Fyodorov Eye Microsurgery Federal State Institution

Email: a_shpak@inbox.ru
ORCID iD: 0000-0003-0273-3307
SPIN-code: 3253-4790

MD, Dr. Sci. (Medicine), Professor

Russian Federation, 59a Beskudnikovskii bulvar, Moscow, 127486

Alexey S. Zhuravlev

S.N. Fyodorov Eye Microsurgery Federal State Institution

Author for correspondence.
Email: zhuravlevalexey96@gmail.com
ORCID iD: 0000-0002-6306-0428

graduate student

Russian Federation, 59a Beskudnikovskii bulvar, Moscow, 127486

Flora A. Avakyan

S.N. Fyodorov Eye Microsurgery Federal State Institution

Email: avakyan.flora@yandex.ru
ORCID iD: 0000-0002-5250-3684

graduate student

Russian Federation, 59a Beskudnikovskii bulvar, Moscow, 127486

Anton I. Kolesnik

S.N. Fyodorov Eye Microsurgery Federal State Institution

Email: kolesnik.doctor@gmail.com
ORCID iD: 0000-0002-6835-7204
SPIN-code: 6910-1469

MD, Cand. Sci. (Medicine)

Russian Federation, 59a Beskudnikovskii bulvar, Moscow, 127486

Svetlana V. Kolesnik

S.N. Fyodorov Eye Microsurgery Federal State Institution

Email: svkolesnik83@gmail.com
ORCID iD: 0000-0002-0939-024X
SPIN-code: 9761-2754

MD, Cand. Sci. (Medicine)

Russian Federation, 59a Beskudnikovskii bulvar, Moscow, 127486

Aik A. Avakyan

Tver State University

Email: avakyan.aik007@yandex.ru
ORCID iD: 0009-0002-9149-7552

student

Russian Federation, Tver

References

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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. M-CHARTS (Inami & Co., Ltd, Japan)

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3. Fig. 2. A software method for evaluating metamorphopsia. Screen view with one of the test images. Further details are explained in the text

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4. Fig. 3. Bland–Altman analysis for integral parameters of tabular and software methods of metamorphopsia assessment. Dotted line is the mean value of the differences of the integral parameters of metamorphopsia determined by the compared methods. Solid lines are the upper and lower limits of the 95% confidence interval of the differences

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