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For other uses, see Blind pass (disambiguation). Blind Pass is the strait that separates Captiva Island from Sanibel Island in Lee County, Florida. Blind Pass from Sanibel Island looking towards Captiva Island with Blind Pass Bridge at left. Archived copy. Archived from the original on 2008-09-17.
Physiological blind spots are an anatomical fact. There are no receptors (rods and cones) where the optic nerve pierces the retina. The field of vision that falls on the physiologic blind spots is not received by the retinal receptors (no receptors in the optic disc-blind spot) and therefore not perceived by the cortex. Since we are binocular beings, the field of vision that falls on the blind spot of one eye is visualized by the contralateral eye.