. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 282 DISTURBANCES IN THE NUTRIENT FLUIDS OF THE EYE after sclero-iridectomies. As a general rule these post- operative detachments disappear when the normal intra- ocular tension becomes restored. ii. Serous Detachment of the Retina.—The cavity of the secondary optic vesicle, between the pigment epi- thelium of the retina and the rods and cones, is in the normal eye only a potential cavity. As, however, the outer layers of the retina receive their nutriment from the
. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 282 DISTURBANCES IN THE NUTRIENT FLUIDS OF THE EYE after sclero-iridectomies. As a general rule these post- operative detachments disappear when the normal intra- ocular tension becomes restored. ii. Serous Detachment of the Retina.—The cavity of the secondary optic vesicle, between the pigment epi- thelium of the retina and the rods and cones, is in the normal eye only a potential cavity. As, however, the outer layers of the retina receive their nutriment from the capillary blood vessels of the choroid, lymph must be constantly passing from the latter, through the pigraent epithelium, and across the potential cavity to the former. Fig. 147.—Detached retina due to thrombosis of vena vorticosse (?) showing retinal and choroidal hemorrhages. Retina detached by coagulated albuminous exudate. Case recorded in Trans. Ophth. Soc. of the U. K., XXXV, 1915, 107. In some cases of detachment of the retina the potential cavity of the secondary optic vesicle is found to have been opened out by the effusion into it of fluid, which sets into a jelly like coagulum in hardened specimens (Figs. 147 and 148). It seems most probable that such an abnormal accumulation of lymph beneath the retina is due to an increase of the blood-pressure in the capillaries of the choroid above the normal pressure in the vitreous chamber. iVssociated with sarcoma of the choroid there is very fre- quently a detachment of the retina, apart from the eleva- tion of it caused by the new growth, the subretinal space being filled by coagulated lymph. In such cases the growth probably causes obstruction to the flow of blood through the choroidal veins and so heightens the pressure in the capillaries. In cases of albuminuric retinitis, bilateral detachment of the retina is sometimes met with,. Please note that these images are extracted from scanned page images that may have been
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