Acceptable in medicine to perform various experiments on laboratory animals, usually in exceptional and extreme conditions, to enter medical conclusions related to humans.
Ophthalmology acceptable to perform experiments on chickens, including vision and development efforts related to the eyes in various stages of eye development.
Experiments in laboratory animals can be very important as they are intended for research and production of life saving drugs or find various medical solutions, but has to exercise discretion and maintain a high moral level prior to performing unnecessary studies.
Unlike humans, chickens do not have the same cells and the structure of the retina. Related to different conclusions based on eye development of important cells in the retina called Amckeriniym cells, may be incorrect because Shlatarngolut Amckeriniym no retinal cells, so conclusions are hard to throw the eyes of mortals.