Optic
41optic glioma — optic nerve glioma, optic pathway glioma a slow growing glioma of the optic nerve or optic chiasm heralded by loss of vision, often with secondary strabismus, followed by proptosis and loss of eye movement …
42Optic cup — may refer to: Optic cup (embryology) Optic cup (ophthalmology) This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point …
43Optic crystals — are crystals that can be used to direct a beam of light. Optic crystals can work as directional guides to the light in photonic devices. Opticmechanics deals with the grinding, polishing and refining of optic crystals. Categories: Fiber… …
44optic tract — n the portion of each optic nerve between the optic chiasma and the diencephalon proper * * * tractus opticus …
45optic chiasm — optic commissure the X shaped structure formed by the two optic nerves, which pass backwards from the eyeballs to meet in the midline beneath the brain, near the pituitary gland (see illustration). Nerve fibres from the nasal side of the retina… …
46optic canal — n OPTIC FORAMEN * * * canalis opticus …
47optic disc — optic papilla the start of the optic nerve, where nerve fibres from the rods and cones leave the eyeball. See: blind spot …
48optic disk — n. BLIND SPOT (sense 1) * * * …
49optic angle — n 1) the angle formed by the optical axes of the two eyes when directed to the same point 2) VISUAL ANGLE * * * visual a …
50optic axis — n OPTICAL AXIS * * * optical axis 1. a. opticus. 2. the straight line that passes through the centers of the surfaces and the centers of curvature of a lens system. In a spherical system, it is the axis of symmetry, in the eye being the line… …
