Text-book of ophthalmology . The chorioid is protected primarily by the retina against the action of the inflam-matory agents that are present in the vitreous. If the retina becomes detached early, sothat now subretinal liquid separates the chorioid from the inflamed retina, the chorioid may remain exempt from severe inflammation. If, onthe other hand, the retina remains for a long timelying on the chorioid, the inflammation passes overto the latter; and the same thing happens when inthe case of an especially severe inflammation the retinain places undergoes necrotic disintegration and
Text-book of ophthalmology . The chorioid is protected primarily by the retina against the action of the inflam-matory agents that are present in the vitreous. If the retina becomes detached early, sothat now subretinal liquid separates the chorioid from the inflamed retina, the chorioid may remain exempt from severe inflammation. If, onthe other hand, the retina remains for a long timelying on the chorioid, the inflammation passes overto the latter; and the same thing happens when inthe case of an especially severe inflammation the retinain places undergoes necrotic disintegration and theinflammatory agents can then act directly on thechorioid. The inflamed chorioid is densely infil-trated with leucocytes, and a free exudate collectsboth on its inner and on its outer surface. The outerexudate lies in the subchorioidal space, and henceproduces a detachment of the chorioid. 359. Results of Changes in the Vitreous.—In the cases in which the inflammation has beenconfined to the anterior chamber, changes re-. Fig. 178.—Purulent Inflammationof the Inner Coats of the Section. Seven days previous to the examina-tion a piece of iron had flown into the eye of an eighteen-year-oid boy as he main which indeed are grave but which for the was watching a smith. In the cornea ° there is a perforating wound a, to most part can be relieved by operation (§ 386). which runs the ins. A purulent exu- ^ J f v«j v /• date covers the inner surface of the gut if the vitreous cavity has been the site of membranes lining the vitreous cavity, J namely, the ciliary body b b and the the inflammation, it is but exceptionally the retina, c c. From the ciliary body the r J w exudate, d, extends oyer the whole pos- case that the eye is preserved, this occurring tenor surface of the lens. The ciliary <j r i o body and retina are densely infiltrated, when the quantity of exudate has been so while the chorioid is scarcely changed. ^ < ^ Near the entrance of the opti
Size: 1593px × 1568px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecteye, booksubjectophth
