We read with great interest the recent commentary by Stewart et al1 describing the evidence of the blood-flow disturbances in the pathogenesis of the glaucomatous damage. Although I agree with some of the findings of this excellent review, there are several important points that should be addressed:

1. After reading this article, one may think that there is not evidence that ocular blood-flow abnormalities are involved in the pathogenesis of the glaucomatous damage. Different studies, using different devices, point in the same …