. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 440 INFLAMMATION trachoma may be of this type. The normal conjunctiva is smooth, and contains no papillae except at the limbus, where also there are a few pigment cells. The epithelium of the conjunctiva in the new born infant differs considerably from that of the adult con- junctiva—a point which is of importance in connection with ophthalmia neonatorum. The epithelium, with the exception of that near the lid margins, is thinner, and not so flattened as in the adul
. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 440 INFLAMMATION trachoma may be of this type. The normal conjunctiva is smooth, and contains no papillae except at the limbus, where also there are a few pigment cells. The epithelium of the conjunctiva in the new born infant differs considerably from that of the adult con- junctiva—a point which is of importance in connection with ophthalmia neonatorum. The epithelium, with the exception of that near the lid margins, is thinner, and not so flattened as in the adult. In the fornices it undergoes c A. Fig. 217.—Epithelium from a case of ectropion, showing the changes due to exposure. A, Surface epithelium; B, downgrowth of epithelium; C, leucocytes between the epithelial cells; D, leucocytes in the subepithelial tissue. considerable mucoid and desquamative changes, laying bare the basement membrane, and so affording a passage through which microorganisms can easily gain entrance. The changes in the epithelium produced by inflamma- tion depend on whether it be kept moist or dry. If moist, the cells proliferate and undergo greatly increased mucoid changes. The passage between them of enormous num- bers of polymorphonuclear leucocytes, together with the softening action of the serous exudate, cause them to be cast off in large numbers in the discharge. The exuda- tion into the subconjunctival tissue causes the formation of papillae from rucking of the surface epithelium; if two epithelial surfaces lie in contact with each other, it is the. 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. Libr
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