Vaulting characteristics of flexible loop anterior chamber intraocular lenses

Fourteen flexible loop anterior chamber intraocular lenses were tested under controlled laboratory conditions. Lens vault was precisely measured as a function of loop compression and of force applied to the loops. A wide range of vaulting characteristics were observed. Some lenses did not vault at all while others vaulted more than the amount of compression. Advantages, disadvantages, and possible clinical implications of lens vault are discussed.