Handheld Auto Refractometer based Shack-Hartmann wave front sensor to detect eye refraction principle to determine the vision.
Hand-held automatic refractometer (Handhold Auto Refractometer HAR) based Shack-Hartmann wave front sensor to detect eye refraction principle to determine the vision. Handheld vision tester is mainly used for the preliminary determination of eye refraction and screening, with objective, accurate, fast, etc., automatic, noninvasive; requires a minimum of cooperation, not only applies to groups with strong, but also with in children, the elderly and other groups with not strong. This solves the ordinary computer refractor subjects who need close cooperation with many of the issues and convenient movement. Even if the subjects were wearing glasses or cataract lenses, you can at a distance of 35cm away his safety and objectively detected diopters.
The HAR-800/880 vision screener 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.
The HAR-800 vision screener 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 can not 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 the adult, but also for the infants and handicapped patients.
HAR-800 vision screener–the optimal weapon for doctor to master the refractive status of patients.
|Non-conact and non-invasive||The light power is safe for eyes, the working distance of the instrument is 35cm (14inches)|
|Low cooperation need||It do not need too much cooperation of children, it is suitable for infants and disabled individuals.|
|Automatic operation by one key||Complete the automatic diction of two eyes, just need one key operation .A speedy and intelligent design.|
|Easy to carry||Small and lightweight body and printer , easy to carry . It is suitable for outdoor screening.|
|Accurate result||The advanced optical detection principle provides an accurate result:including myopia , hyperopia, astigmatism, axial and anisometropia.|
|Comprehensive detection modes||In fant mode is specially designed for the babies’ refraction characteristic. Myopia mode is specially designed for common myopia people and high myopia people (HAR-880 only).|
|Adult mode is suitable for all adults.|
|Dual mode distance hint||Through ultrasonic measurement of distance , it adopts sound and visual color light prompt the distance.|
|High performance battery||Short charging time and can use for a long time|
|Large storage capacity||420 data storage|
|Ultrasonic distance measurement||Automatic monitoring the detection distance through audible and visual hint|
|Aiming||The cross-shape is luminous and easy for aiming|
|Printer||Thermal printer by infrared connection|
|MODEL: HAR-800||MODEL: HAR-880|
|WORKING DISTANCE||Adult/infant mode: 335 ± 10mm||Adult/infant mode: 335± 10mm,|
|myopia mode: 268±10mm|
|DISTANCE DETECTION||Automatic, with audible and visual cues||Automatic, with audible and visual cues|
|DATA ACQUISITION TIME||2s/eye||2s/eye|
|RELIABILITY MEASURE||Indicates number of and variation among measurements for the given eye||Indicates number of and variation among measurements for the given eye|
|BATTERY LIFE||More than 6 hours of continuous usage||More than 6 hours of continuous usage|
|LOW-BATTERY WARNING:||Indicates 15 minutes usage remains||Indicates 15 minutes usage remains|
|WAVELENGTH||850 ± 20nm||850 ± 20nm|
|OUTPUT OF THE LASER RADIATION||150~200µW||150~200µW|
|DETECTION MODES||Adult Mode, enfant mode||Adult Mode, enfant mode, myopia mode|
|SPHERE RANGE||+8.0 to -6.0 Diopters||+8.0 to -9.0 Diopters|
|SPHERE TOLERENCE||± 0.5 Diopters||± 0.5 Diopters|
|CYLINDER RANGE||+3 Diopters||+3 Diopters|
|CYLINDER TOLERENCE||± 0.5 Diopters||± 0.5 Diopters|
|AXIS OF ASTIGMATISM RANGE||1° ~ 180°||1° ~ 180°|
|AXIS OF ASTIGMATISM TOLERENCE||0.25D~1.00D : ± 10°||0.25D~1.00D : ± 10°|
|1.25D~3.00D : ± 5°||1.25D~3.00D : ± 5°|