Systems and methods for mapping and evaluating visual distortions caused by metamorphopsia are provided. A subject with distorted vision is shown initial patterns which may be adjusted to appear non-distorted. A reference pattern within the subject's region of distorted vision is generated from the initial patterns and is used to promote suitable head position and eye fixation. Further patterns within the distorted region are shown to the subject and are adjusted to appear non-distorted. Patterns may be non-adjustable outside of the distorted region. A distortion map is defined based on the adjusted patterns. Additional detail may be added to the distortion map by interpolation. Images may be distorted using the distortion map to appear non-distorted to the subject.
