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Eyeglass :: Eyeglass (n.) The retina.

Retinaculum :: Retinaculum (n.) A small gland or process to which bodies are attached; as, the glandular retinacula to which the pollinia of orchids are attached, or the hooks which support the seeds in many acanthaceous plants..

Chromophane :: Chromophane (n.) A general name for the several coloring matters, red, green, yellow, etc., present in the inner segments in the cones of the retina, held in solution by fats, and slowly decolorized by light; distinct from the photochemical pigments of the rods of the retina..

Xanthophane :: Xanthophane (n.) The yellow pigment present in the inner segments of the retina in animals. See Chromophane.

Retineum :: Retineum (n.) That part of the eye of an invertebrate which corresponds in function with the retina of a vertebrate.

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..

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..

Rhodophane :: Rhodophane (n.) The red pigment contained in the inner segments of the cones of the retina in animals. See Chromophane.

Retinal :: Retinal (a.) Of or pertaining to the retina.

Image :: Image (n.) The figure or picture of any object formed at the focus of a lens or mirror, by rays of light from the several points of the object symmetrically refracted or reflected to corresponding points in such focus; this may be received on a screen, a photographic plate, or the retina of the eye, and viewed directly by the eye, or with an eyeglass, as in the telescope and microscope; the likeness of an object formed by reflection; as, to see one's image in a mirror..

Emmetropia :: Emmetropia (n.) That refractive condition of the eye in which the rays of light are all brought accurately and without undue effort to a focus upon the retina; -- opposed to hypermetropia, myopia, an astigmatism..

Retinasphalt :: Retinasphalt (n.) Alt. of Retinasphaltu.

Irradiation :: Irradiation (n.) The apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is, esp. when a little out of focus..

Retinaculum :: Retinaculum (n.) One of the retractor muscles of the proboscis of certain worms.

Photogene :: Photogene (n.) A more or less continued impression or image on the retina.

Fulcrum :: Fulcrum (n.) The connective tissue supporting the framework of the retina of the eye.

Myeloidin :: Myeloidin (n.) A substance, present in the protoplasm of the retinal epithelium cells, and resembling, if not identical with, the substance (myelin) forming the medullary sheaths of nerve fibers..

Retinasphaltum :: Retinasphaltum (n.) Retinite.

Melanin :: Melanin (n.) A black pigment found in the pigment-bearing cells of the skin (particularly in the skin of the negro), in the epithelial cells of the external layer of the retina (then called fuscin), in the outer layer of the choroid, and elsewhere. It is supposed to be derived from the decomposition of hemoglobin..

Retinitis :: Retinitis (n.) Inflammation of the retina.

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