January 31, 2003
Mechanical Properties of the Human Posterior Lens Capsule
Investigative Ophthalmology and Visual Science. 2003;44:691-696.)
To investigate mechanical properties of the human posterior lens capsule,twenty-five human donor eyes were obtained from an eye bank. The age of the donors ranged from 1 to 94 years. Data for the posterior lens capsule were compared with previously published data for the anterior lens capsule.
The thickness of the posterior lens capsule ranged from 4 to 9 µm and showed no significant changes with age. Ultimate mechanical strength of the posterior lens capsule decreased significantly with age. Ultimate strain ranged from 101% to 34%, ultimate load ranged from 15.9 to 1.1 mN, .....
CONCLUSIONS. .... The age-related loss of mechanical strength seemed to begin earlier in the posterior lens capsule than in the anterior lens capsule. In accommodative function range (low strains), the mechanical quality of the posterior lens capsule was similar to the anterior lens capsule, which indicates that the mechanical effectiveness of the lens capsule in situ varies proportionally with capsular thickness.
posted by A.Gholaminejad, MD
Posted by agholami at January 31, 2003 02:55 PM