Whether U need a basic Snellen chart or advanced ETDRS testing in a clinical research setting, Hongdee’s vision charts cover all scenarios. VC-100 provides a portable LED solution, while Essence and Elite models offer high-definition LCD display with programmable sequences. Each unit comes with a wall-mount bracket and remote control.
- Versatile optotypes: U can display Snellen, ETDRS, Tumbling E, or custom graphics.
- Adjustable brightness: Ensures clear letter contrast under various ambient lighting.
- Remote control & software: Preloaded testing protocols and patient data storage.
| Product Model | V-100 | VS-100 | |
| Picture | |
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| Imaging Mode | Infrared Eccentric Photography | Infrared Eccentric Photography | |
| Operating model | Binocular/Monocular, ast/high-precision mode support | Binocular/Monocular | |
| Screen size | 4.3″ touch screen with 90 degrees flippable | 5″ touch screen | |
| Net weight | 0.8kg | 1kg | |
| Pupil positioning mode | AI | / | |
| Testing Light Environment | matched dark box, no need to create a dark room | There is no need to create a dark room | |
| Storage | 13G | 14G | |
| Carrying case | yes | yes | |
| Degree of Spherical(DS) | Range | -9.00D~+7.00D | -10D – +7.50D |
| Resolution | 0.25D/0.01D | 0.25D/0.01D | |
| Accuracy | ±0.50D | ±0.50D | |
| Degree of Column(DC) | Range | 0~3.00D | '-3D~+3D |
| Resolution | 0.25D/0.01D | 0.25D/0.01D | |
| Accuracy | ±0.50D | ±0.50D | |
| Axis | Range | 0°~180° | 1°~180° |
| Resolution | 1° | 1° | |
| Accuracy | ±5° | ±10°(0.25D-0.5D) | |
| ±5°(0.5D-3D) | |||
| Pupil Size | Range | 4.0~9.0mm | 4.0~9.0mm |
| Accuracy | ±0.1mm | ±0.1mm | |
| Pupil Distance | Range | 35~80mm | 35~80mm |
| Accuracy | ±1mm | ±1mm | |
- Easy integration: Compatible with standard exam room wiring and mounting brackets.
- Customizability: Upload custom logos or optotypes to reinforce clinic branding.
- Durability: Anti-glare screens and rugged housings protect against accidental damage.
We specialize in providing high-quality diagnostic devices, refraction systems, low vision aids, and ophthalmic furniture — all backed by a complete supply chain, strong OEM/ODM service, and a customer-first philosophy.