New noncontact device for ocular biometry demonstrates validity, repeatability

Researchers used the new LenStar, which uses optical low coherence reflectometry to provide high-resolution noncontact ocular biometry, and the IOLMaster to take measurements in cataract patients. A subgroup of patients also underwent A-scan applanation ultrasonography. Although there were some statistical differences between ocular biometry measurements between the LenStar and current clinical instruments, they were not clinically significant. Intersession repeatability of the LenStar measurements were found to be highly repeatable (variability ≤ 2 percent of average value).