“…2,3 This phenomenon is postulated to be due to a reversal of the backward bowing of the lamina cribrosa, swelling of the optic disc, and increased intravascular volume. 2,3 In contrast, recent studies using finite element modeling predict that optic nerve head (ONH) biomechanics strongly depend on scleral biomechanical properties. 4,5 In support of this prediction, we report an adult case of secondary glaucoma in which the ONH tissue deformation and restoration due to IOP fluctuation were associated with changes in axial length and optic disc size.…”