Peiffer R L, Gum G G, Gelatt K N
Am J Vet Res. 1978 Dec;39(12):1927-31.
Changes in intraocular volume and pressure induced by Schiøtz tonometry were measured and utilized to calculate the in vivo rigidity of the normal canine eye. Rigidity was found to be dependent upon intraocular pressure (IOP) and tonometer weight; rigidity assumed a parabolic relationship to IOP, decreasing from 0.0754 at 5 mm of Hg IOP to 0.0274 at 55 mm of Hg IOP and gradually increasing to 0.0333 at 100 mm of Hg IOP.
测量了由 Schiøtz 眼压计引起的眼内体积和压力变化，并利用这些变化来计算正常犬眼的体内硬度。发现硬度取决于眼压（IOP）和眼压计重量；硬度与眼压呈抛物线关系，在眼压为 5 mmHg 时为 0.0754，在眼压为 55 mmHg 时降至 0.0274，并在眼压为 100 mmHg 时逐渐增至 0.0333。
