B-Scan Scanning Angle: 53° Dynamic Loop: 10s/100 images, loop or frame-by-frame playback Image Saving: 100 images Gray Scale: 256 Levels Gain: 1-105dB adjustable TGC: -20dB to 20dB with dynamic range, manual sectional adjustment (6-section adjustable) Post-processing: Frame-Averaging; Pseudo-Color Codes; Gamma Correction; Text Annotation & Image Magnification A-Scan AL Biometric Measuring Range: Axial Length (AL): 15mm-40mm; AL Biometric Measuring Accuracy: No more than ±0.05mm; Total Gain: 98dB, user’s gain adjustability: 1~60dB; Measuring Mode: 5 groups (Normal, Aphakic, Special, Cataract and Manual Measurement); Measuring Method: Immersion/Contact; IOL calculation: SRK-T, SRK-II, BINK-II, HOLLADAY, HOFFER-Q and HAIGIS; Support IOL calculation after refractive surgery, two groups of formulas can be calculated contrastively and displayed simultaneously. Automatic measurement and 10 groups averaging and display standard deviation. Up to 8 groups of IOL constants can be stored.