13. Handheld Auto Refractometer HAR-800

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.


Product Benefits.:

Non-conact and non-invasiveThe light power is safe for eyes, the working distance of the instrument is 35cm (14inches)
Low cooperation needIt do not need too much cooperation of children, it is suitable for infants and disabled individuals.
Automatic operation by one keyComplete the automatic diction of two eyes, just need one key operation .A speedy and intelligent design.
Easy to carrySmall and lightweight body and printer , easy to carry . It is suitable for outdoor screening.
Accurate resultThe advanced optical detection principle provides an accurate result:including myopia , hyperopia, astigmatism, axial and anisometropia.
Comprehensive detection modesIn 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 hintThrough ultrasonic measurement of distance , it adopts sound and visual color light prompt the distance.
High performance batteryShort charging time and can use for a long time
Large storage capacity420 data storage
Ultrasonic distance measurementAutomatic monitoring the detection distance through audible and visual hint
AimingThe cross-shape is luminous and easy for aiming
PrinterThermal printer by infrared connection



WORKING DISTANCEAdult/infant mode: 335 ± 10mmAdult/infant mode: 335± 10mm,
 myopia mode: 268±10mm
DISTANCE DETECTIONAutomatic, with audible and visual cuesAutomatic, with audible and visual cues
RELIABILITY MEASUREIndicates number of and variation among measurements for the given eyeIndicates number of and variation among measurements for the given eye
BATTERY VOLTAGEd.c.11.1Vd.c.11.1V
BATTERY LIFEMore than 6 hours of continuous usageMore than 6 hours of continuous usage
LOW-BATTERY WARNING:Indicates 15 minutes usage remainsIndicates 15 minutes usage remains
WAVELENGTH850 ± 20nm850 ± 20nm
DETECTION MODESAdult Mode, enfant modeAdult 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 TOLERENCE0.25D~1.00D : ± 10°0.25D~1.00D : ± 10°
1.25D~3.00D : ± 5°1.25D~3.00D : ± 5°

HAR-800 HAR-880-2

HAR-800 880

HAR-800 880-1

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