Built-in software is developed on Linux platform.
All the optotypes and charts are vector graph optotypes could be changed randomly without repeating.
The contrast sensitivity measurement can be made with the Gamma Calibration feature LED screen is durable.
The built-in software could be upgraded free during the lifetime.
Specification
| Screen | Type | 17-inch XGA panel with long-lasting backlight |
| Resolution | 1280*1024 pixels | |
| Brightness | 160cd/m² (min) | |
| Charts | Optotypes | Tumbling E, Landolt C, Alphabet, Numbers, Children |
| Mask type | Single Mask, Horizontal Mask, Vertical Mask, White/Black Mask, Red/Green Mask | |
| Special chart | ETDRS, Contrast Sensitivity Test, Contrast Test, Ishihara, Cross Cylinder, Astigmatic Fan Dial, Cross Grid, Fixation Spot Test, Stereo Test, Red/Green Panel, Worth Four-Dot Test, Red/Green Balance, Street Lamp, Horizontal Coincidences, Vertical Coincidences, Schober | |
| Other functions | Video playing, Audio playing, Randomization Optotypes playing, Mirror function, Screen Saver function, Standby function | |
| Visual Unit | Decimal | 0.04~2.0 |
| Snellen (ft) | 20/500~20/10 | |
| Snellen (m) | 6/150~6/3 | |
| Log MAR | -0.3~1.4 | |
| 5-Grade | 3.6~5.3 | |
| Working Distance | 2m ~ 7m (in steps of 0.1m) 6ft ~ 24ft (in steps of 0.5ft) | |
| Low vision chart: 0.6~1.5m, 0.1m/step | ||
| Power Supply | Input | AC220V ~ 230V ±10%, 50/60HZ |
| Consumption | 20w | |
| Remote Controller | IR Remote, 2*AAA Batteries | |
| Standard accessories | Remote Controller, Wall Bracket, Desk Bracket, Red/Green Glasses, Optotypes Card, Power Cable, AC-DC Adapter | |
| Optional accessories | Desk support, Ground Support | |
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