... Specifications A MODE Probe: 10MHz Accuracy: 0.05mm Measure: ACD, Lens, Vitreous, Axial Length, and its Average IoL Calculation: SRK-II, SRK ... , Holladay, SCDK, Haigis etc Measure: ACD, Lens, Vitreous, Axial Length, and its Average Modes: Manual, Automatic Information storage: Mass memory, Build ... , Gray, Stretch, Equalize, etc( Ophthalmic A/B scan , ophthalmic equipments,usb2.0 compatible (CAS-2000B)