Straßer Lab
Applied Vision Research
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Visual Acuity At different levels of Contrast and Ambient Luminance (VA-CAL)
Clinical visual acuity assessment is performed with maximum optotype contrast within a very narrow luminance range (80-320 cd/m²), barely reflecting patients’ visual capabilities in daily life. However, visual acuity alone does not adequately assess the visual performance in retinal disorders, especially in those causing an increased glare-sensitivity like achromatopsia.
For a more realistic assessment of patients’ visual performance under everyday life conditions with different contrast levels (C) and ambient luminance (AL), we develop a novel visual acuity score, called VA-CAL in cooperation with the Zrenner Lab.
The project is supported by
Publications
- Hilmers J, Straßer T, Bach M, Stingl K, Zrenner E. Quantification of the Dynamic Visual Acuity Space at Real-World Luminances and Contrasts: The VA-CAL Test. Transl Vis Sci Technol. 2022;11: 12. doi:10.1167/tvst.11.4.12