“…The measurement of collicular threshold sensitivity used in this study has not been previously applied to this model and provides an indication of relative preservation of visual field. Its importance lies in the fact that there is evidence of some degree of correlation between the amounts of functional rescue and anatomical preservation and that the data collected compares with visual field perimetry testing in humans (27). A reliance on functional assessment is clearly preferable when providing background to clinical treatments, because it is not clear what relation commonly used measures, such as thickness of photoreceptor layer, have to degree of functional rescue.…”