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Gray Medical
Gray Medical
Application: This product is used for preliminary determination of adults' or children's refractive error. The result of this product is used for vision screening only. It cannot replace a comprehensive eye exam.
| Item | Range | Interval | Tolerance | |
|---|---|---|---|---|
| Spherical (S) | Myopia Mode | -9.00D~ +2.50D | 0.25D | ±0.50D or ±20% |
| Normal Mode | -6.00D ~ +8.00D | |||
| Cylindrical (C) | -3.00D~0.00D | 0.25D | ±0.50D or ±20% | |
| Axis (A) | 0°~180° | 1° | ±5° | |
Working Principle: The working principle of this vision screener is based on Hartmann-Shack wavefront sensor. The internal light source is focused to the retina by the refractive media of the eye and reflected back to the device. The diopter of the patient is obtained through calculation of the detected signal.
Handheld Vision Screener
Hospital and Surgical Equipment
X-Ray and Ultrasound Systems
Obstetric and Rehabilitation Apparatus
Dental and Ophthalmic Clinic Equipment
Laboratory and Sterilization Products
