Antiquity. An optic nerve

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Happens that the person who has fainted, having regained consciousness after a faint, finds out that the right half of body, first of all a hand and a foot, at it are paralysed. If such person dies, at opening find in the left half of brain, in a certain place, a hemorrhage. The link sided hemorrhage and brain damage cause, thus, a right-hand paralysis, and it speaks a crossing of nerves.

Feature of an optic nerve is that at the lowest pozvonochnyh, for example at fishes, all fibres cross. Eyes at fish are put on the parties so that the right eye she can see only that is on the right, and left - only that at the left. At the person and the mammals closest to it cross, as it is already told, not all fibres that provides binokuljarnost sight, that is ability to see a certain point both eyes simultaneously thanks to what dimensions of visual impressions are reached.

Ruf, of course, did not know it, but already that it the first has described a crossing of optic nerves, allows to consider its as one of researchers of a human body.

One of outstanding doctors of Ancient Rome undoubtedly was Klavdy Galen (apprx. 130. 200). It has left to descendants many books in which sometimes told and about itself.

Trudy Galena throughout fourteen centuries served for doctors some kind of the Gospel, and within 1400 they got the knowledge from books of the great Greek-Roman doctor. As soon as doubts started to overwhelm them, doctors searched at Galena of council what to do in this case, how to arrive at the given illness, how to treat the given patient. Certainly, its recipes differed extreme complexity, but it corresponded to a spirit of the age. It is impossible to forget that Galen lived during an epoch which did not know a medical science in original sense of this word. In Ancient Rome the medicine, basically, was property of the formed people. In the big compositions of ancient writers as in the encyclopaedic dictionary, everything contained that was at that time known in various branches of knowledge; in these compositions, certainly, it was told and about medicine.