دورية
Reciprocal Action of the Constrictor and Dilator Pupillae During Light Adaptation
| العنوان: | Reciprocal Action of the Constrictor and Dilator Pupillae During Light Adaptation |
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| المؤلفون: | Gullberg, J. E., Olmsted, J. M. D., Wagman, I. H. |
| المصدر: | Experimental Biology and Medicine; June 1938, Vol. 38 Issue: 5 p616-619, 4p |
| مستخلص: | The differences in pupil diameter in the dark adapted rabbit's eye can be summarized as follows: 1. It is smallest when the sympathetic is cut. This state represents an equilibrium between the elasticity of the iris and the "residual tone" of the sphincter. 2. It is slightly larger when both the sympathetic and the third nerves are cut. In this condition, elastic tissue only holds the pupil open. 3. It is still larger in the normal eye when there is an equilibrium between the "residual tone" of the sphincter on the one hand and the elasticity of the iris tissue plus the active contraction of the dilator on the other. 4. It is at its greatest possible maximum when the third nerve is cut or atropine is instilled into the normal eye. Here the "residual tone" of the dilator and the possible slight contraction of this muscle is added to the action of the elastic tissues of the iris. |
| قاعدة البيانات: | Supplemental Index |
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