28. Inserting scalpel to loosen lens and cut through vitreous 70
29. Taking out lens and “core” of vitreous 71
30. Squeezing out remaining part of vitreous 72
33. Lens, iris, and part of vitreous removed 77
34. How to force blowpipe into the vitreous 78
35. Bulging out of vitreous caused by blowing air through glass blowpipe 79
37. Folding the retina by blowing air at it through blowpipe 81
38. Suspended retina. Sclerotic ready to be cut away 82
39. Showing sclerotic nearly all cut away 83
41. The beginning of the cutting of the eye for sagittal sections 87
42. Method of cutting through the crystalline lens 88
43. Cutting through cornea to complete the sagittal sections 89
45. Part of calf’s head showing knitting needles inserted in puncta 93
46. Course of knitting needles showing the course of the canaliculi 94
47. Initial cuts to be made in the skin 98
49. All the cuts to be made in bones of orbit 100
51. Dissecting close to bones of orbit 102
54. Side view of enucleated eye. All parts _in situ_ 104
55. Enlarging pupil for ophthalmoscopic inspection 107
56. How to get rid of the pucker in the cornea 108
60. Showing the extrinsic muscles of the eye 118
62. Scraping ciliary processes free. Choroid cut around ciliary ring 121
The aim of this booklet is to present to the eye-specialist, the teacher, the student, and others interested in the study of the anatomy and physiology of the eye, some definite methods to follow in the dissection of that organ.
Most dissections of the eye are not made with the same degree of care and skill used in the dissections of other organs. In following the usual method of dissecting eyes, much of the important detail is lost. Often certain membranes are confounded with others, and wrongly demonstrated. Furthermore, an eye is merely divided by some demonstrators into an anterior and a posterior half, a very short time is spent by the students scrutinizing each half; then the text-book is turned to, and the anatomy is studied descriptively.
Not enough time has been given to thoroughly dissecting all parts of the eye. As much time should be given as is necessary to bring out prominently all its parts. Other organs of the body are more thoroughly dissected, and, therefore, the student has better opportunity to gain a clearer comprehension and better understanding of the anatomy and physiology of those organs. Also, as much time should be given, proportionately, to the learning of the technique of the dissection of the eye as is given to the learning of the technique of dissecting other organs of the body.