Specialising in Paediatric Vision Testing
Specialising in Paediatric Vision Testing

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TNO Stereo Test

From £90.00

19th Edition


The TNO Stereo Test is a random dot stereo test to evaluate stereopsis in clinical or occupational environments while wearing anaglyph glasses.

It consists of three screening plates (Plates I – III), a plate for testing eye suppression (Plate IV) and two plates (Plate V and VI) for the quantitative testing of stereo acuity. The three screening plates show test images, a butterfly and geometric forms, that, when viewed through the red-green glasses, seem to float above the test plate. The quantitative plates are comprised of optotypes shaped as discs with a sector missing. The optotypes are distributed over four different depth levels covering a range of 60 to 480 arcsec, values much lower than the 1980 arcsec that are used for the screening plates.

​The TNO Stereo Test is available with a set of stereo viewing glasses for either children or adults. Both the book or the glasses can also be purchased separately.

Piantanida AC, Spera M, Nobili R, Gerosa G. Statistics of TNO stereotest for the diagnosis of microesotropia in children. European Journal of Ophthalmology. 2018;28(3):259-263. doi:10.5301/ejo.5001064

Country of origin: NL


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Walraven, J. (1975). Amblyopia screening with random-dot stereograms. Am. J. Ophthalmol. 80, 893.

RAF, (2007). Minimum visual standards for service in the Royal Airforce. www.aop.org.uk/uploaded_files/raf.

Royal Netherlands Air Force, (2015). Centre for Man and Aviation. Soesterberg, Netherlands.

Richards, W. (1970). Stereopsis and stereoblindness. Exp.Brain Res. 10, 380.

Walraven, J. and Janzen, P. (1993). TNO stereopsis test as an aid to the prevention of amblyopia. Ophthalmic. Physiol. Opt. 13, 350.

Hered, R.W. (2013). Pre-school vision screening in primary paediatric practice. www.ncbi.nlm.nih.gov/pubmed/23633734

Oliver, M. (1971). and Nwratski, I. Screening of pre-school children for ocular anomalies. I. Screening methods and their methods and their practicability at different ages. BR.J. Ophthalmol. 55(7), 462.

Julesz, B. (1961). Binolucar depth perception without familiarity cues. Science 145, 356.

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