Metropsis research edition

A complete toolbox for psychophysical assessment of visual function

Fast, accurate and more sensitive than standard tests

For normal, defective, paediatric, ageing and low vision populations

Metropsis is a complete toolbox

Metropsis is a complete test suite suitable for clinical, pre-clinical, drug trials, screening, sports science, applied vision and human factors research. Choose from a wide range of tests, including protocols designed for normal, paediatric, ageing and low vision populations – or we can develop a custom test  for your project.


Easy screening of Best Corrected Visual Acuity using the familiar chart.

Single Optotype

A finer scale of letter sizes allows detection of more subtle changes in visual acuity.

Landolt C

Especially suitable for pre-readers, illiterates and subjects unfamiliar with the Latin alphabet.

Gabor Patch

For a more detailed characterisation of spatial visual abilities.


Quick, easy and efficient to score, measures contrast acuity using customised spatial frequencies.

Cambridge Colour

Rapid screening, or full assessment of changes in colour discrimination.

Low Vision Colour

Uses a larger stimulus size which is more suitable for patients with low vision.

Universal Colour Test

A discrimination task which is simple enough even for children as young as 5 years old.

for faster more precise assessment of visual function

Metropsis is more sensitive than standard charts: ideal for investigating diseases of the eye and brain, as well as secondary effects of systemic disorders, such as cardiovascular disease or neurological function.


The research edition includes Metropsis Display++ technology (the screen displaying the ETDRS chart above) with a unique integrated sensor system, enabling the display to self-calibrate in real time. So you can be sure that your results are reliable and repeatable – even when performing long-term studies using multiple Metropsis systems across different sites.

trusted worldwide

Metropsis research edition is currently being used in clinical trials and natural history studies in research centres worldwide, including:

  • Moorfields Eye Hospital, London
  • Nuffield Laboratory of Ophthalmology, Oxford
  • National Eye Institute, Bethesda
  • Johnson & Johnson Vision Care
  • Department of Clinical Neurosciences, University of Cambridge
  • Kobe Eye Centre
  • Tokyo Medical Centre
  • L V Prasad Eye Institute, Hyderabad
  • Kellogg Eye Centre, Ann Arbor
  • Institut de la Vision, Paris
  • Institute for Ophthalmic Research, Tubingen
  • Emory Eye Centre, Atlanta
  • Department of Ophthalmology, University of Colorado
  • Department of Medicine and Optometry, Linnaeus University
  • Faculty of Medicine, University of Coimbra
  • University of Pennsylvania
  • University of Nevada, Reno
  • Azienda Ospedale Universita’ Padova, Oculistica Ospedale Sant’Antonio Padova, Centro di Ipovisione, Riabilitazione ortottica e Neuroftalmologia
  • University of Latvia
  • Karolinska Institutet, Stockholm
  • Technological University Dublin

precision Display++ UHD technology

One of the key elements of Metropsis research edition is the calibrated 32” QLED LCD Display++ UHD Monitor, designed and manufactured exclusively by Cambridge Research Systems  (see some earlier Display++ references below). Display++ UHD makes it easy to display calibrated visual stimuli with precision timing and provides excellent control of colour and contrast.

Reliable stimulus presentation

Off-the-shelf LCD panels suffer from large colour and luminance fluctuations. This may be acceptable for screening tests, but general purpose LCD displays are unsuitable for precision testing. Novel hardware corrections developed by our Staff Scientists ensure that Display++ UHD reliably presents calibrated test patterns on every trial.


Highly accurate colour reproduction and spatial uniformity


Display++ UHD reproduces colours with high accuracy (average CIE DE2000 < 0.3) and high spatial uniformity (over 95%) across the screen area. It offers 10-bit RGB native colour precision, up to 12-bit with Deep Colour Technology, allowing the investigator to obtain very fine contrast levels.


Self-calibrating monitor


Display++ UHD is calibrated at the factory and maintains its calibrated light output thanks to a built-in light sensor. The sensor is isolated by the ambient light, so changes in the ambient light will not affect the calibration of the monitor.

Display++ UHD Technical Data
  • High quality 32” 4K UHD 3480×2160 IPS LCD panel with wide colour gamut Quantum Dot LED backlight

  • 10-bit RGB native colour precision, up to 12-bit with Deep Colour technology

  • Contrast ratio 1000:1

  • Grey-to-grey response time 2ms

  • 120Hz & 144Hz panel drive at 3480×2160 and 1920×1080

  • Real time calibration ensures accurate luminance, regardless of the effects of warm up and ageing

  • Hardware spatial uniformity correction, gamma correction, and CIE XYZ colour management system ensures accurate colour reproduction

  • Configurable wide dynamic range backlight, suitable for testing in photopic, mesopic and scotopic conditions; no filters required

  • Multiple synchronous TTL trigger outputs

  • Integrates with CRS audio, eye tracking and behavioural response devices, and compatible with solutions from other vendors


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