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MacuFix® versus Amsler grid for metamorphopsia categorization for macular diseases
Daniela Claessens1, Parul Ichhpujani2, Rohan Bir Singh3,4
1Augenheilkunde Lindenthal, Dürener Str. 251, 50931, Cologne, Germany. daniela.claessens@gmx.de.
International Ophthalmology
|August 22, 2021
Summary
The MacuFix® app offers a user-friendly way to monitor macular health at home. Patients with macular diseases found it easy to use and tested more frequently than with the Amsler grid.
Area of Science:
- Ophthalmology
- Medical Technology
- Digital Health
Background:
- Macular diseases frequently cause metamorphopsia, a visual distortion.
- The Amsler grid is the traditional tool for assessing metamorphopsia.
- Novel digital solutions are needed for effective patient self-monitoring.
Purpose of the Study:
- To evaluate the usability of the MacuFix® smartphone application for assessing metamorphopsia.
- To compare the diagnostic adherence of MacuFix® with the traditional Amsler grid for home monitoring.
Main Methods:
- An observational study involving 45 patients with metamorphopsia.
- Usability assessed using the System Usability Score (SUS) questionnaire.
- Comparison of self-monitoring frequency between MacuFix® and Amsler grid.
Main Results:
- The MacuFix® application achieved a "good" usability score (76.7 ± 15.5) via SUS.
- Patients using MacuFix® tested significantly more often (6 days vs. 19 days).
- The odds of frequent testing were 4 times higher with MacuFix® compared to the Amsler grid.
Conclusions:
- The MacuFix® application demonstrates high user satisfaction for home monitoring of macular function.
- Increased testing frequency suggests better patient engagement in monitoring their condition.
- MacuFix® shows promise as an effective tool for patients with macular diseases.

