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I was very interested in the article by Gray et al titled "The Central Visual Field in Homonymous Hemianopia: Evidence for Unilateral Foveal Representation."¹ I agree that this is further confirmation that the sparing of central field in occipital lobe lesions is due to the large representation that the central field has in the visual cortex, and it should put the final nail in the coffin of the bilateral representation theory. However, there appears to be some confusion in the article as to the visual field projection of the macula and fovea. I agree that if the macula is defined as that part of the retina containing xanthophyll pigment, its size is about 5.5 mm in diameter and it will therefore project an angular visual field through the nodal point of the eye of about 25°. This does not, however, correspond to 25° from fixation on the field chart as . . . [Full Text of this Article]

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