Overview
Enviro Testers computerized handheld refractometer can check the refractive error precisely for different groups of people using the ultrasonic ranging, cross line, flashing light and sound technology and then to find out the probably potential refractive problems. Ideal for babies, seniors, and patients with language barriers. If doctors cannot find the long-lasting refractive error and cure it properly, children would become sadly amblyopia someday or lose the best chance to treat the lazy eye and finally become permanent amblyopia. The special model for children testing is the best way for child screening. It is the necessary equipment for a doctor to master the refractive status of patients.
Technical specifications
| DS Range | -7.50 D to +7.50 D |
| DS Resolution | 0.25 D to 0.01 D |
| DS Accuracy | ±0.50 D |
| Axis Range | 1° to 180° |
| Axis Resolution | 1° |
| Axis Accuracy | ±5° |
| Pupil Size Range | 0.16 in to 0.35 in (4.0 mm to 9.0 mm) |
| Pupil Resolution | 0.0039 in (0.1 mm) |
| Pupil Accuracy | ±0.0039 in (0.1 mm) |
| Pupil Distance Range | 1.37 in to 3.14 in (35 mm to 80 mm) |
| Pupil Distance Resolution | 0.039 in (1 mm) |
| Pupil Distance Accuracy | ±0.039 in (1 mm) |
| Gaze: | 0° to 20° |
| Measuring Distance: | 0.039 in (1 mm) |
| Time Per Measurement | 1 s |
| Display | 5-inch touch screen |
| Size | 7.08 in x 5.11 in x 4.33 in (180 mm × 130 mm × 110 mm) |
| Weight | 28.21 oz (800 g) |
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