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Adhesiveness of AcrySof to a collagen film
T Nagata1, A Minakata, I Watanabe
1Department of Ophthalmology, Hamamatsu University School of Medicine, Shizuoka, Japan.
Purpose:
To measure the adhesiveness of the AcrySof intraocular lens (IOL) to a collagen film to ascertain its capacity to adhere to the lens capsule.
Setting:
Haibara General Hospital, Haibara, and Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan.
Methods:
Each of five AcrySof IOLs was attached to a collagen film, slightly pressed in intraocular irrigating solution, and then pulled up and off the film with a DuNouy's surface balance. The force recorded by the surface balance at the moment it detached from the film was defined as the lens' adhesiveness. A control experiment was performed using five conventional poly(methyl methacrylate) (PMMA) IOLs.
Results:
Mean adhesiveness was 2.76 gram-weight (gw) +/- 0.55 (SD) for AcrySof and 0.81 +/- 0.20 gw for PMMA. The difference was statistically significant (P < .0001, t-test).
Conclusion:
AcrySof may have a strong tendency to adhere to the lens capsule, contributing to posterior and anterior capsule clarity and preventing lens decentration in vivo.