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Sheep eyeball sclerotomy and biaxial planar force and displacement measurement. (A) Eyeball cleared of muscles, fat, and fascia with 8 × 8 mm square of sclera removed. (B) Sclera and choroid removed exposing retina still attached to vitreous. (C) Polytetrafluoroethylene square glued onto retina. (D) Eyeball secured to biaxial materials machine via load cells. (E) Retina with attached polytetrafluoroethylene square being pulled away from rest of eyeball by biaxial materials machine.
