Effects of storage time on the mechanical properties of rabbit peripapillary sclera after enucleation

Curr Eye Res. 2007 May;32(5):465-70. doi: 10.1080/02713680701273792.


In the field of biomechanics, little research has been performed to evaluate the effect of storage time on the material properties of ocular tissues. Twenty-four rabbit eyes were divided into six groups with storage times from 3 to 72 hr. A tensile specimen was prepared from the inferior quadrant of each sclera and was subjected to a stress relaxation test. The data were analyzed using linear viscoelastic theory yielding four material parameters (E(0), instantaneous elastic modulus; E(infinity), equilibrium elastic modulus; beta, half-width of the Gaussian distribution; tau(m); mean relaxation time). No statistically significant differences were found in the material properties of each group, which suggests that sclera can be stored up to 3 days without risking mechanical deterioration.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Elasticity
  • Eye Enucleation*
  • Models, Theoretical
  • Normal Distribution
  • Preservation, Biological*
  • Rabbits
  • Sclera / physiopathology*
  • Stress, Mechanical
  • Time Factors
  • Viscosity