1987 volume 16(5) pages 649 – 654

Cite as:
Arditi A, 1987, "The adaptive significance of the location of the optic disk" Perception 16(5) 649 – 654

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The adaptive significance of the location of the optic disk

Aries Arditi

Received 11 September 1987

Abstract. Although the 'filling in' of each blind spot by healthy retina in the other eye has long been described as an adaptive property of the spatial arrangement of the optic disks, an explanation of why the disks are specifically located where they are has yet to be proposed. A rationale for their horizontal position in humans is offered that is based on the projections of the blind spots in visual space in relation to fixation distance and to the protrusion of the bony facial occlusion of the nose bridge.

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