Is the Zeiss Biometer eye axis affected by curvature?

Yes. In Parallel Extreme Mode, the eye length and corneal curvature will be measured synchronously, so the Zeiss Biometer eye axis will be affected by the curvature.The German Zeiss IOLMaster IOL Biometer is an optical biometric instrument that uses non-contact technology to measure the K-value of a patient after LASIK myopia surgery.