DEVICE FOR RELIABLY DETERMINING BIOMETRIC MEASUREMENT VARIABLES OF THE WHOLE EYE

摘要

Device for reliably determining biometric measurement variables of the whole eye The present invention relates to a device for determining biometric variables of the eye, as are incorporated in the calculation of intraocular lenses. The device according to the invention for measuring biometric variables of the eye consists of a multi- point keratometer and an OCT arrangement, solved by virtue of the fact that the multi-point keratometer is configured such that the keratometer measurement points are illuminated telecentrically and detected telecentrically and that the OCT arrangement is designed as a laterally scanning swept- source system with a detection region detecting the whole eye over the whole axial length thereof. The multi-point keratometer ensures that a sufficient number of keratometer points are available for measuring the corneal surface. By contrast, telecentricity ensures that the positioning inadequacies of the measuring instrument in relation to the eye to be measured do not lead to a local mismatch of the reflection points. What the swept-source OCT scan, which detects the whole eye over the length thereof, achieves is that both anterior chamber structures and retina structures can be detected and a consistent whole eye image can be realized