Overview
Enviro Testers Auto Refractometer Ophthalmic Equipment 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. It has so many merits, such as portable, fast, and accurate testing, non-contact, and non-injury to your eyes. It is fit for the refractive screening of huge population since that 5 second is enough for both eyes test. We all know that the refractive status is very important for children just because that if doctor cannot find the long-lasting refractive error and cure it properly, children would become amblyopia sadly someday or lose the best chance to treat the lazy eye and finally become the permanent amblyopia. The special model for children testing is the best way for child screening. So, it is not only for adults, but also for infants and handicapped patients.
Technical Specifications
| Working Distance | Adult/enfant mode: 13.19 in ± 0.39 in (335 mm ± 10 mm) |
| Distance Detection | Automatic, with audible and visual cues |
| Data Acquisition Time | 2 s / eye |
| Reliability Measure | Indicates number of and variation among measurements for the given eye |
| Battery Voltage | d.c.11.1 V |
| Battery Life | More than 6 hours of continuous usage |
| Low-battery Warning: | Indicates 15 minutes usage remains |
| Wavelength | 850 nm ± 20 nm |
| Output Of the Laser Radiation | 150 µW to 200 µW |
| Detection Modes | Adult Mode, enfant mode |
| Sphere Range | + 8.0 Diopters to – 6.0 Diopters |
| Sphere Tolerance | ± 0.5 Diopters |
| Cylinder Range | + 3 Diopters |
| Cylinder Tolerance | ± 0.5 Diopters |
| Axis Of Astigmatism Range | 1° to 180° |
| Axis Of Astigmatism Tolerance | 0.25 D to 1.00 D: ± 10° |
| 1.25 D to 3.00 D: ± 5° |
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