TECHNIQUE OF EYE DISSECTIONS 



mention the hyaloid membrane and its rela- 

 tions with other parts of the eye. Rarely is 

 there any attempt made to isolate it. Often, 

 too, the retina is mistaken for the hyaloid, and 

 the retina, then wrongly demonstrated as 

 being attached to the choroid. Of course, it is 

 impossible to separate the hyaloid from the 

 vitreous; but a dissection can be made which, 

 when placed in a glass of some kind, will show 

 the hyaloid. If the following simple tech- 

 nique is carefully observed, the membrane, 

 with all its connections, can be easily sepa- 

 rated from certain other parts of the eye. 

 Opportunity for thorough study and observa- 

 tion will then be made extremely easy. 



Procure the eye of either a sheep or a bul- 

 ]ock. Instead of following the usual procedure 

 of hardening in any one of the several solu- 

 tions used for the purpose of toughening the 

 ocular tissues, place the eye in a cool place 

 and permit it to collapse a trifle. Usually two 

 or three days is a sufficient length of time to 

 accomplish the result. 



Experiments have shown that if an eye is 

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