Investigating the discrepancy between MAIA and MP‐1 microperimetry results.
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| Title: | Investigating the discrepancy between MAIA and MP‐1 microperimetry results. |
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| Authors: | Xu, Lixing (AUTHOR), Wu, Zhichao (AUTHOR), Guymer, Robyn H (AUTHOR), Anderson, Andrew J (AUTHOR) |
| Source: | Ophthalmic & Physiological Optics. Nov2021, Vol. 41 Issue 6, p1231-1240. 10p. 1 Black and White Photograph, 1 Chart, 4 Graphs. |
| Subjects: | Computer monitors, Visual fields, Computer systems, Perimetry |
| Abstract: | Purpose: Previous work has suggested that sensitivities measured on the iCare MAIA and Nidek MP‐1 microperimeters differ systematically, although it is unclear whether one or both devices are inaccurate. Here, we assess the discrepancy between these two instruments as well as with a rigorous reference standard. Methods: Fifteen healthy participants underwent visual field testing on the MAIA and MP‐1 microperimeters. Results were compared to a reference measure of increment thresholds on a laboratory‐based, calibrated computer monitor system using the same background luminance and target size. Discrepancies were assessed as a function of eccentricity along the vertical meridian. Differences in decibels (dB) due to differences in the maximum stimulus luminance between devices were accounted for mathematically. Results: The mean sensitivity measured with the MAIA was <1 dB lower than laboratory‐based measures, which was statistically significant but of limited clinical importance. In contrast, the mean sensitivity measured with the MP‐1 was >8 dB lower than the laboratory measures. The difference was greater for an eccentric superior retinal location, in contrast to what would be predicted if the discrepancy was due to a ceiling effect caused by the MP‐1's limited dynamic range. Conclusions: While MAIA measurements showed low bias compared with our rigorously determined reference standard, the MP‐1 showed large discrepancies that could not be explained purely by the limited dynamic range of the instrument. MAIA and MP‐1 sensitivity values cannot be compared directly, and caution is advised when assessing absolute sensitivities or eccentricity effects in the extensive MP‐1 literature. [ABSTRACT FROM AUTHOR] |
| Copyright of Ophthalmic & Physiological Optics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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