The practice of surgery . 122 COKNEITIS. itself, or from an exciting cause applied to some other part of thesurface of the eye. The conjunctival investment only may be involved;and this is most likely to occur when the affection is a mere extensionfrom conjunctivitis; or the action may be mainly and originally residentin the proper substance of the cornea. All forms of conjunctivitis, whenof any duration, are apt to implicate the cornea; but the strumous formmore especially. A red zone of dilated vessels encircles the corneal margin, generallyat the upper part; and between the two there is no
The practice of surgery . 122 COKNEITIS. itself, or from an exciting cause applied to some other part of thesurface of the eye. The conjunctival investment only may be involved;and this is most likely to occur when the affection is a mere extensionfrom conjunctivitis; or the action may be mainly and originally residentin the proper substance of the cornea. All forms of conjunctivitis, whenof any duration, are apt to implicate the cornea; but the strumous formmore especially. A red zone of dilated vessels encircles the corneal margin, generallyat the upper part; and between the two there is no intervening clear space of white sclerotic, as in affections ofPig. 33. the deeper parts of the eye. When the conjunctival covering is involved, smallhair-like vessels are seen ramifying on it,in greater or less number, continuous withthose constituting the outer zone. Whenthe proper substance alone is affected, suchvascularity is, in the first instance, not dis-cernible, unless by the aid of a magnifyingglass. There is p
Size: 1692px × 1477px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdec, booksubjectsurgicalproceduresoperative
