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Eyepiece :: Eyepiece (n.) The lens, or combination of lenses, at the eye end of a telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed..

Synoptist :: Synoptic (n.) One of the first three Gospels of the New Testament. See Synoptist.

Optical :: Optical (a.) Relating to the science of optics; as, optical works..

Vision :: Vision (v.) The faculty of seeing; sight; one of the five senses, by which colors and the physical qualities of external objects are appreciated as a result of the stimulating action of light on the sensitive retina, an expansion of the optic nerve..

Omphaloptic :: Omphaloptic (n.) An optical glass that is convex on both sides.

Autoptic :: Autoptic (a.) Alt. of Autoptica.

Retina :: Retina (n.) The delicate membrane by which the back part of the globe of the eye is lined, and in which the fibers of the optic nerve terminate. See Eye..

Anaclastics :: Anaclastics (n.) That part of optics which treats of the refraction of light; -- commonly called dioptrics.

Slide :: Slide (n.) A plate or slip of glass on which is a picture or delineation to be exhibited by means of a magic lantern, stereopticon, or the like; a plate on which is an object to be examined with a microscope..

Photology :: Photology (n.) The doctrine or science of light, explaining its nature and phenomena; optics..

Optical :: Optical (a.) Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye..

Sclerotal :: Sclerotal (n.) The optic capsule; the sclerotic coat of the eye.

Panopticon :: Panopticon (n.) A room for the exhibition of novelties.

Scioptric :: Scioptric (a.) Scioptic.

Stereoscope :: Stereopticon (n.) An instrument, consisting essentially of a magic lantern in which photographic pictures are used, by which the image of a landscape, or any object, may be thrown upon a screen in such a manner as to seem to stand out in relief, so as to form a striking and accurate representation of the object itself; also, a pair of magic lanterns for producing the effect of dissolving views..

Spectroscope :: Spectroscope (n.) An optical instrument for forming and examining spectra (as that of solar light, or those produced by flames in which different substances are volatilized), so as to determine, from the position of the spectral lines, the composition of the substance..

Synosteology :: Synoptist (n.) Any one of the authors of the three synoptic Gospels, which give a history of our Lord's life and ministry, in distinction from the writer of John's Gospel, which gives a fuller record of his teachings..

Shank :: Shank (v.) Flat-nosed pliers, used by opticians for nipping off the edges of pieces of glass to make them round..

Coptic :: Coptic (a.) Of or pertaining to the Copts.

Thalamus :: Thalamus (n.) A mass of nervous matter on either side of the third ventricle of the brain; -- called also optic thalamus.

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