Fluid transport in isolated rabbit eye lens

Fluid transport in the isolated rabbit eye lens was assayed gravimetrically, and was found to be, at least partly, an active process involving Na,K-ATPase. Thereby the pressure inside the lens proved to be elevated by 6 mm Hg. The energy required for this process was estimated at (1.5–6)·10−2 J. The movement of fluid in vivo (monitored with fluorescein) proceeds from the anterior to the posterior surface and out into the vitreous body.