title: Ocular measurement by simple gravimetric methods.
abstract: A rapid, precise, and easy method for measuring ocular volume would be useful in estimating the theoretical tension changes involved in the relation of pressure and volume changes and in estimating areas of different membranes of the eye. Rabbit eyes were weighed in air and then in water, and the mass and volume of each eye was calculated. For eyes between 2.4 and 3.4 gm. the volume of the eye was given by (mass X 0.97 - 0.02) ml. The difference between paired eyes was always less than 1%, (i.e., less than 100 mg.). If a spherical eye is assumed, the "mean radius" could be calculated to 0.1 mm. from the volume (for tension calculations). From the depth of various segments of the eye, areas could be calculated. If a destructive experiment were to be performed on one live eye, the other could be used as a control for measurement after the conclusion of the experiment.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D005123:Eye / Q000033:anatomy & histology*; D005260:Female; D007429:Intraocular Pressure; D008297:Male; D008722:Methods; D009929:Organ Size; D051381:Rats