References

Czech and Slovak Ophthalmology

166

10.31348/2020/25

Original article

Usage of Digital D Chart Test as a Modification of Amsler Grid in Ophthalmology and Optometry

Bočková

Magdaléna

Veselý

Petr

https://orcid.org/0000-0002-2195-6349

Beneš

Pavel

https://orcid.org/0000-0002-9430-0383

1 11 2020

Aims: Metamorphopsia is important symptom of macular disease. The most common simple detection method of metamorphopsia is Amsler grid. Usually it is used monocularly with best correction for near. Patient should evaluate grid deformation and describe position of the deformity. This method is based on qualitative principle. For quantitative evaluation we can use Software D Chart (Thomson Software Solution). This instrument enables evaluate degree and position of the metamorphopsia in central visual field. Our goal was to establish M-score values in group of young healthy subjects without correction (M-score natural), with cylindrical spectacle lens (M-score SL) and in group of patients with age related degeneration (M-score ARMD). Objects and Methods: We had 33 probands divided into 2 samples. The first sample contains 15 young probands with average age 23 years without any eye pathology. The second sample contains 18 patients with ARMD (7 with dry form and 11 with wet form). In our study we used software D Chart (Thomson Software Solution). This software was use in Acer PC with touchable screen. We note total M-score in right eye of all probands. Level for statistic evaluation was set on p = 0.05. Results: Natural M-score values for young probands was: median 0, minimum 0, maximum 2.3. With cylindrical lens we got these values: median 25.2, minimum 3.6, maximum 41.6. In second sample with probands suffer from ARMD we got these values: median 0.8, minimum 0, maximum 29.4. Wilcoxon non-parametric test was used for statistical evaluation. We proved statistically significant difference between all variables. M-score natural vs. M-score SL showed p < 0.001, M-score natural vs. M-score ARMD showed p = 0.04 and M-score SL vs. M-score ARMD showed p < 0.001. Conclusion: Our study showed statistically significant differences between variable M-score natural, M-score SL and M-score ARMD. We found that printed Amsler grid as well as its digital modification D Chart are suitable for determining metamorphopsia in central visual field. The main advantage of D Chart is quantitative evaluation of the test with M-score and digital registration of retinal changes during patient´s follow up.

D Chart M-score Amsler grid ARMD spectacle correction cylinder

References

Amsler M. Earliest symptoms of diseases of the macula. Br J Ophthalmol. 1953;7:521–537.

Crossland M, Rubin G. The Amsler chart: absence of evidence is not evidence of absence. Br J Ophthalmol. 2007;91:391–393.

Matsumoto C, Arimura E, Okuyama S, Takada S, Shigeki H, Shimomura Y. Quantiﬁcation of metamorphopsia in patients with epiretinal membranes. Invest Ophthalmol Vis Sci. 2003;44:4012–4016.

Goldstein M, Loewenstein A, Barak A, Pollack A, Bukelman A, Katz H. Results of a multicenter clinical trial to evaluate the preferential hyperacuity perimeter for detection of age-related macular degeneration. Retina. 2005;25:296–303.

Chew EY, Clemons TE, Bressler SB, Elman MJ, Danis RP, Domalpally A, Heier JS et al. Randomized trial of a home monitoring system for early detection of choroidal neovascularization home monitoring of the Eye (HOME) study. Ophthalmology. 2014;21:535–544.

McGowan G, Yorston D, Strang NC, Manahilov V. D-CHART: A Novel Method of Measuring Metamorphopsia in Epiretinal Membrane and Macular Hole. Retina. 2016;36:703.

Querques G, Berboucha E, Leveziel N, Pece A, Souied EH. Preferential hyperacuity perimeter in assessing responsiveness to ranibizumab therapy for exudative age-related macular degeneration. Br J Ophthalmol. 2011;95:986-991.

Ghazi-Nouri SMS, Tranos PG, Rubin GS, Adams ZC, Charteris DG. Visual function and quality of life following vitrectomy and epiretinal membrane peel surgery. Br J Ophthalmol. 2006;90:559–562.

Okamoto F, Okamoto Y, Hiraoka T, Oshika T. Effect of vitrectomy for epiretinal membrane on visual function and vision-related quality of life. Am J Ophthalmol. 2009;147:869–874.

Nowomiejska K, Oleszczuk1 A, Brzozowska A. M-charts as a tool for quantifying metamorphopsia in age-related macular degeneration treated with the bevacizumab injections. BMC Ophthalmology. 2013;13:13.

Gessesse GW, Tamrat L, Damji KF. Amsler grid test for detection of advanced glaucoma in Ethiopia. PLoS ONE. 2020;15(3):e0230017. https://doi.org/10.1371/journal.pone.0230017.10.1371/journal.pone.0230017