Transactions . .eosine. At the part of the choroid which corresponds t theydlow spol of the retina. .? To. Note in Pig. 11 (1) The moredeeply pigmented retinal epithelium the increased thickness ofthis layer. (2) Increased pigmentation of the choroid proper.(3) Greater thickness of the choroid. The mien .photographs werekindly made by Dr. Alexander Low. encroached on fete orbit. The eye was examined ophthal-moscopically before operation. The media were clear andthe fundus normal. The choroidal vessels al the macula THE <Ili»]; \i THE MACULAK REGION. 109 were not so evident as those1 si
Transactions . .eosine. At the part of the choroid which corresponds t theydlow spol of the retina. .? To. Note in Pig. 11 (1) The moredeeply pigmented retinal epithelium the increased thickness ofthis layer. (2) Increased pigmentation of the choroid proper.(3) Greater thickness of the choroid. The mien .photographs werekindly made by Dr. Alexander Low. encroached on fete orbit. The eye was examined ophthal-moscopically before operation. The media were clear andthe fundus normal. The choroidal vessels al the macula THE <Ili»]; \i THE MACULAK REGION. 109 were not so evident as those1 situated more y-lohe, hardened in 5 percent. formalin, was openedequatorially. At the macula was a dark area nearlycircular and twice the size of the optic disc. When theretina was removed a well-marked dark area was visiblein tin choroid which corresponded in size and situationto the dark area seen at the macula before the retina had Fist. 12. Etel inalepithelium Sclerotic. From the same section as Pig. 11, at a short distance above theyellow simt region, x To. been removed. A piece of the fundus—sclerotic withchoroid including the dark spot and (he region imme-diately above it was separated with scissors. When thiswas viewed sideways and examined with a lens, the choroid was seen to be thicker and more deeply pigmented at the part of the specimen corresponding to the darkspot. The separated piece was then divided in two in 1 10 DISEASES OF THE CHOROID. such a way as to leave half of the dark spot in eachspecimen. One half was imbedded in celloidin, the otherhalf, after separation of the sclerotic, in paraffin. It is evident from a microscopical examination of thesections that there is at the dark spot (1) a deeper pigmen-tation of the retinal epithelium, an increased thickness ofthis layer, (2) a marked increase in the pigmentation ofthe choroid, (3) an increase in the thickness of thechoroid. Nuel * mentions that the choroid is considerablythicker at
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Keywords: ., bookcentury1800, bookdecade1880, bookpu, booksubjectophthalmology
