plural of optical delusion

(dated) A vision or image that is deceptive or misleading, such as an optical illusion or a trick of the light.

(anatomy) Either of a pair of passages through the orbit of the eye in the lesser wing of the sphenoid bone that is traversed by the optic nerves and ophthalmic arteries.

plural of optic foramen

An input device consisting of a small surface with an optical sensor, integrated for some smartphones and subnotebooks.

plural of optical power

The degree to which a lens, mirror, or other optical system converges or diverges light, equal to the reciprocal of the focal length of the device.

Alternative spelling of optical disc

plural of optical disk

Misspelling of optic chiasm.