. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. AMYLOID BODIES IN OPTIC NERVE AND RETINA 649 Hyaline nodules, which must evidently be derived from neuroglial tissue, are found in the lining membrane of cystic protrusions from congenitally microphthalmic eyes (see page 20). This lining membrane is composed of tissue derived from the secondary optic vesicle, and imme- diately external to it is fibrous tissue continuous with the sclera—no choroid and no elastic lamina or pigment epi- thelium intervening—-so that the
. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. AMYLOID BODIES IN OPTIC NERVE AND RETINA 649 Hyaline nodules, which must evidently be derived from neuroglial tissue, are found in the lining membrane of cystic protrusions from congenitally microphthalmic eyes (see page 20). This lining membrane is composed of tissue derived from the secondary optic vesicle, and imme- diately external to it is fibrous tissue continuous with the sclera—no choroid and no elastic lamina or pigment epi- thelium intervening—-so that the only tissue from which the hyaline nodules could have taken origin is that derived from neural epiblast. Amyloid Bodies in the Optic Nerve and Retina.— Amyloid material like hyaline presents microscopically a. Fig. 284.—Section showing an amyloid body in the retina. homogeneous appearance; it is, however, distinguished from it by turning a brownish-red colour when stained with iodine, and a purple-red colour with methyl violet. It is often found in association with hyaline material, and also with an homogeneous substance which gives staining reactions that are not quite typical of one or the other. It seems probable that hyaline is derived from the amyloid. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Collins, E. Treacher (Edward Treacher), 1862-1937; Mayou, M. Stephen (Marmaduke Stephen), 1876-1934; Pyle, Walter L. (Walter Lytle), 1871-1921, editor; University College, London. Library Services. London : William Heinemann
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