ophthalmic A/B scanner: 1.integrated track 2.new system ... Window 7 or Window XP 3.USB2.0 compatible 4.very high quality CE FDA ophthalmic A ... new System Window 7 or Window XP, integrated track...... Technical specification:A-SCANB-SCANPROBE: 10MHzPROBES: 10MHz,Accuracy: 0. ... Vitrous, Axial lengthDISPLAY mode: B, B+B, B+A mode,IoL Calculation: Holladay, Hoffer-Q, SCDK, SRK ...