Coverage: Standard: 0.25 –11mm TCC (Composite): Limbus to Limbus Extrapolated Data Point Coverage: Limbus to 18mm Field of View: Topography: 17.5 mm (H) Fluorescein: 20.0 mm (H) Anterior Image: 26.0 mm(H) Meibomian Image: 26.0 mm (H) Repeatability/Accuracy (Test Object): 0.1 Diopters Power Range: 10 –100 Diopters Number of Rings: 32 Measurement Points: 102,000 Analyzed Points Computer Minimum Requirements PC and Mains Powered Peripherals: EN/IEC60950 Compliant PC Requirements: OS: Microsoft™ Windows™ 10 Pro (recommended) or Home (64 and 32 bit editions) Windows Server 2016 or 2019 (64-bit edition only). Processor: Intel™ i5 generation 6 or later Motherboard: Genuine Intel™ chipset highly recommended. Memory: 8 GB for non-video captures, 16 GB for video captures. Hard Disk Space: 40 GB for non-video, 200GB for video captures (More for larger databases or busy practices). Video cards: GPUs with dedicated memory of 2 Gig or more are recommended. Screen resolution: Recommended 1920 x 1080; Minimum supported: 1280 x 720 USB: USB 3.1 Gen 1 Compliant port on the PC