OPHTHALMIC a.
Of, pertaining to, or in the region of, the eye; ocular; as the ophthalmic, or orbitonasal, nerve, a division of the trigeminal, which gives branches to the lachrymal gland, eyelids, nose, and forehead. Ophthalmic region (Zoöl.), the space around the eyes.
PARALLAX n.
of a body as seen from the earth and sun; as, the annual parallax of a fixed star. -- Binocular parallax, the apparent difference in position of an object as seen separately by one eye, and then by the other, the head remaining unmoved. -- Diurnal, or Geocentric, parallax, the parallax of a body with reference to the…