Fig. 32—Showing how to cut around the ciliary ring. ([Page 77].)
The first part of this dissection is the same as the beginning of the dissection for the isolation of the choroid. Remove all the outside tissues first, and then the cornea, and about 10 mm. of the sclerotic, as described in the preceding dissection. (See [Figs. 22], [23], [24], and [25].) That will lay bare the iris and a few millimetres of the choroid.
Fig. 33—Lens, iris, and part of vitreous removed. ([Page 78].)
After that has been done, turn the eye so the iris will be uppermost. With the tweezers pick up the pupillary margin of the iris, and with the fine-pointed scissors cut through the iris and the ciliary processes ([Fig. 31]); separate both from the choroid by cutting close to the posterior edge of the processes. ([Fig. 32].) In doing that, cut partly through the vitreous also, but be careful not to injure the peripheral edge of the retina—ora serrata. After the iris has been separated from the choroid, cut completely through the vitreous in such a way that the lens will also be removed with the iris. ([Fig. 33].)
Fig. 34—Showing how to force glass blowpipe (A) into vitreous (B). ([Page 80].)
Fig. 35—Showing bulging out of vitreous caused by blowing air through glass blowpipe. ([Page 80].)
