... USB2.0 compatible 4.very high quality CE FDA ophthalmic A/B scan #CAS-2000C: Main configuration:USB 2.0 ... ultrasonic image dynamic playbackB ultrasonic videoing grey scale reaches 256including A/B scanner, printer, computer, new System Window 7 or Window ... Lateral <0.5mmMEASURE: ACD, Lens, Vitrous, Axial lengthDISPLAY mode: B, B+B, B+A mode,IoL Calculation: Holladay, Hoffer-Q, SCDK, SRK-II, SRK ...