New paper in the Eye journal on the measurement of distortion in keratoconus
New paper in the Eye journal on the measurement of distortion in keratoconus
Experimental paradigm for distortion measurement
Distortion is one of the most common symptom in keratoconus. However, there are no methods to measure this distorted vision. In this study we introduce a novel experimental paradigm based on vernier acuity and field matching techniques to quantitatively measure distortion.
We measure distortion in 25 people with keratoconus and normal controls. We report higher distortion in participants with keratoconus compared to normal controls. Distortion indices also showed moderate to strong correlation with clinical indices such as maximum corneal curvature and TKC.
This is the first study to quantitatively measure distortion in keratoconus and provides a basis to develop home-based tools to measure distortion in order to monitor keratoconus progression.
Mahesh R Joshi
Lecturer in Optometry
My research interests include using psychophysical methods to investigate visual attributes such as motion and shape perception in normal and clinical populations.