Portable Paediatric Autorefractor plusoptiX A16

Plusoptix provides binocular, hand-held vision screening devices, especially for infants, children and uncooperative patients.

Studies show that the best visual outcomes depend on the early detection and treatment of vision disorders. Therefore, paediatric ophthalmologists recommend annual vision screening for all children starting ideally at the age of one year. If there is a family history of eye disorders, earlier screening is advised at the age of 6 to 8 months old.

Conventional visual acuity testing can only be performed in older, cooperative children.

Two healthy eyes are critical to a child’s well-being and development. A visual disorder compromises social and scholastic achievement, can be dangerous in traffic and restrict occupational choices later in life.

The Plusoptix device provides an accurate measurement within seconds. Measurement results are compared to age-specific thresholds, and a “Pass” or “Refer” vision screening result is displayed.

A “Refer” vision screening result will mean the patient should consult an eye care professional for further advice.

Interested in the Portable Paediatric Autorefractor plusoptiX A16?

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A16 Features

  • plusoptiX A16 is connected to electricity
    It is always operational and cannot “disappear” or be misplaced easily.

  • plusoptiX A16 features an internal patient database
    Users can save up to 100,000 records with the option to upload scheduled patients’ preliminary information.

  • CSV interface for full integration to your EMR system is included
    Allows automated patient data imports/exports and measurement result documentation.

  • Plusoptix A16 connects to a DVI monitor
    Can be connected to a monitor for a strong presentation to the patient or parent.

  • This device offers various documentation options
    Measurement results can be documented electronically or on paper in several ways.

  • Plusoptix software updates are free – forever!

  • The Plusoptix hassle-free warranty got you covered
    Covers even dropping the device. Europe and US only.

Plusoptix S16 Features

Plusoptix Screening Devices

The Plusoptix A16 range of devices detects refractive errors and eye misalignment, which are the most common causes of amblyopia (lazy eye).

Measurements are non-invasive, requiring no physical contact with the child. A sound target attracts fixation, and no further cooperation is required to perform a measurement.


  • Binocular readings
  • Measurement results are compared to age specific thresholds and a “Pass” or “Refer” vision screening result is displayed

  • Measurement from 1m distance to the child
  • Measurement in less than one second
  • Can be used in undilated pupils
  • Fully automated function
  • Children can be measured starting at 6 months of age
  • Measurement is delegable and can easily be performed by a trained assistant
  • Child friendly design
  • Possibility to measure over glasses and contact lenses

The measuring principle is based on eccentric photoretinoscopy: infrared light is projected through the pupils onto the retina. Depending on the refractive error, the reflected light forms a specific brightness pattern within the pupil. The spherical refraction is calculated based on this crescent pattern. To determine cylinder and axis, the same measurement is repeated in three meridians. The measurement with infrared light is completely innocuous. Infrared light is also contained in daylight and not visible.

Screening Results

Plusoptix vision screening devices provide reliable measurement values of:

  • Refraction (spherical equivalent)
  • Pupil diameter and pupil distance
  • Symmetry of corneal reflexes

With these measurement values it is possible to detect the following most prevalent childhood vision disorders that may lead to the development of amblyopia (lazy eye) including:

  • Hyperopia (farsightedness)
  • Myopia (nearsightedness)
  • Astigmatism (blurred vision)
  • Anisometropia (unequal refractive power)
  • Anisocoria (unequal pupil size)
  • Strabismus (eye misalignment)

With the determined measurement values compared to age specific thresholds, a “Pass” or “Refer” vision screening result is displayed. Children with a “Refer” result need to be sent to an eye care professional for an eye examination.

What does a screening report look like? Click here for a detailed description of the Plusoptix screening report.

Interested in the Portable Paediatric Autorefractor plusoptiX A16?

Complete the form and one of our agents will call you back.

Quality Guaranteed






Studies with plusoptiX Vision Screener

Year Title Reference Results
2016 A comparison of plusoptiX A12 measurements with cycloplegic refraction AAPOS 2016, Volume 20, Issue 4, Pages 310–314 Mean patient age 7.63 ±3.41 years

Mean difference of sphere:
0.88 ± 1.5 (0.58 to 1.4) r=0.91

Mean difference of cylinder:
-0.61 ± 0.74 (95% CI -0.66 to 0.77) r=0.81

Mean difference of axis:
71.17 ± 71.04 (95% CI 77.3 to 68.9) r=0.7

Sensitivity, specificity for myopia: 86%, 93%

Sensitivity, specificity for astigmatism: 85%, 98%

Sensitivity, specificity for hyperopia: 40%, 100%

2014 Photoscreeners in the Eye Office: Compared Testability and Refractions on High-Risk Children Am J Ophthalmol 2014; article in press Patient age 1 to 16 years (mean patient age 6.0 ±3.4 years)

Mean difference of sphere:
-0.64 ±0.08 (95% CI -0.82 to -0.46)

Mean difference of cylinder:
0.32 ±0.04 (95% CI 0.24 to 0.41)

Mean difference of spherical equivalent:
-0.47 ±0.07 (95% CI -0.64 to -0.30)

2012 Screening for amblyopia risk factors in pre-verbal children using the plusoptiX photoscreener: a cross-sectionals population-based study Br J Ophthalmol 2012; 96:83-86 Patient age 6 to 36 months (mean patient age 16.95 ±8.59 months)

Mean difference of sphere:
+0.05 ±1.05D; p=0.43

Mean difference of cylinder:
-0.43 ±0.58D; P=0.01

Mean difference of spherical equivalent:
-0.16 ±1.0D; p=0.01

2011 Detecting Small Angle Strabismus With The plusoptiX Photoscreener AAPOS 2011 Poster#042 Patient age 6 months to 18 years

Mean difference of prism diopters:
0.39 PD to near cover-test (95% CI -0.72 to +1.51; p=0.49)
0,17 PD to distance cover-test (95% CI -1.17 to +0.82; p=0.73)

2010 Screening for refractive errors in children: The plusoptiX S08 and the Retinomax K-plus2 performed by lay screener compared to cycloplegic retinoscopy J AAPOS 2010; 14:478-483 Patient age 3 months to 11 years (mean patient age 5.2 ±2.6 years)

Mean difference of spherical equivalent:
-1.13 ±1.25D (95% CI -3.59 to +1.32)

Mean difference of cylinder:
-0,23 ±0,53D (95% CI -1.28 to +0.81)

Paediatric Autorefractor Device Model Comparison

All Plusoptix Binocular Autorefractors share the same measurement technology and algorithm. Hence, measurement accuracy is identical across all available device models. The devices differ in mobility and documentation options as specified below.

Stationary in one exam room Mobile between multiple exam rooms or locations
Plusoptix S16

Paediatric Autorefractor plusoptiX A16

plusoptiX S12C in comparison with ball

Paediatric Autorefractor plusoptiX A12C

plusoptiX S12R in comparison with ball

Paediatric Autorefractor plusoptiX A12R

Letter-size report& self-adhesive label yes / yes yes / yes yes / yes
LAN / WIFI interface yes / yes no / yes no / no
Connection to EMR / plusoptiXconnect yes / yes yes / yes no / no
External monitor interface yes (DVI) no no
Power supply Medical power adapter
(100 – 240 V AC / 50 – 60 Hz)
6x rechargeable batteries
(Standard AA size)
6x rechargeable batteries
(Standard AA size)
Hardware Features
Touchscreen operation 4.3 Inch (resistive) 5.7 Inch (capacitive) 4.3 Inch (resistive)
Weight 26.5 oz (0.75 kg) 35.3 oz (1.0 kg) 28.2 oz (0.8 kg)
Interfaces 4 x USB, IR, DVI, LAN (RJ-45), WLAN 2 x USB, IR, SD, WLAN 2 x USB, IR, SD
Identical Features
Measurement Technology Binocular infrared photo retinoscopy with unique 54 LED illumination
Measurement Range -7.00 to +5.00 dpt in 0.25 dpt increments
Pupil Size 3.0 to 8.0 mm in 0.1 mm increments
Acquisition time dynamic, in average 0.5 sec.
Measuring distance 3.3 ft ± 2 in (1 m ± 5 cm)
Fixation target Warble sound and Smiley face
Service Features
Warranty Hassle-free warranty (can be extended for a period of up to 10 years after initial commissioning)
Operating Cost None, because no calibration or maintenance is needed

Interested in the Portable Paediatric Autorefractor plusoptiX A16?

Complete the form and one of our agents will call you back.