The Ph-temperature Coefficient of Rabbit Anterior Chamber Aqueous Humor.

.he recent determination of the ocular temperature gradient indicated the necessity to define those ocular physiologic and metabolic functions, especially of the anterior segment of the eye, which are most temperature dependent. One such important function is that of pH or hydrogen ion activity of the anterior chamber aqueous humor. With the recent introduction of extremely stable pH meters as well as anaerobic, capillary glass electrodes requiring small volumes, the reproducibility of electrometric pH measurements has become more precise. The recent publication of revised standard values for phosphate buffers at different temperatures and the formulation of an additional phosphate buffer to cover the physiologic pH range have provided valuable references for obtaining pH measurements that are meaningful to a thousandth of a pH unit. Since the only data available on the pH-temperature