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Correspondence
March 1998

Selectivity in Glaucoma Injury—Reply

Arch Ophthalmol. 1998;116(3):397-398. doi:

In reply

Dr Quigley began his letter as follows:

. . . Sample et al state that their psychophysical testing "calls into question the theory that magnocellular optic nerve fibers show the earliest functional loss from glaucoma." However, they admit that their results "do not address whether larger optic nerve fibers per se . . . are damaged before smaller parvocellular fibers."

In response, we include the full quote from our article: "The results do not address whether larger optic nerve fibers per se, whether from magnocellular ganglion cells or from the relatively larger blue-yellow parvocellular ganglion cells, are damaged before smaller parvocellular fibers."1

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