Scientific papers

Limits and possibilities of the Lang-Stereotest

Authors: S. Entacher, R.E. Resch
Year of publication: 2021

Development of stereo vision in young infants

Interesting experimental study from the University of Fribourg, Switzerland, on the visual processing of stereo stimuli in infants aged 4 and 7 months, using stereograms of the Lang stereopad.

Authors: Infancy, Volume 25, Issue 6 November/December 2020 Pages 781-796
Authors: Martina Röthlisberger, Andrea Frick
Year of publication: 2020

Comparative analysis of the Lang-Stereopad in a non-clinic population

First internationally published evaluation study of the new Lang-Stereopad in normal vision subjects, comparing TNO, Frisby, and Lang Stereotest II.

Authors: VISION research group, University of Liverpool UK in Strabismus 2019
Authors: Fiona J. Rowe, Lauren R. Hepworth, Claire Howard, Chung Shen Chean & Meera Mistry
Year of publication: 2019

Video Game Vision Syndrome: A New Clinical Picture in Children?

Interesting study from Italy that demonstrated temporary losses of random dot stereopsis on the Lang stereotest I in children who spend particularly long hours playing video games on mobile phones and tablet computers.

Authors: Journal of Pediatric Ophthalmology & Strabismus • Vol. 54, No. 6, 2017
Authors: C.Rechichi, G.De Mojà, P.Aragona
Year of publication: 2017

Statistical Evaluation in Pediatric Patient of LANG-STEREOTEST I for the Diagnosis of Microesotropia in Daily Practice

Authors: Poster
Authors: D. Allegrini, M. Spera-Orth, L. Rossetti, L. Ottobelli, A.C.Piantanida
Year of publication: 2016

Stereo tests as a screening tool for strabismus: which is the best choice?

The Lang stereotest I was the one with the highest sensitivity, specificity, positive predictive value and negative predictive value in comparison with the Lang stereotest II, Titmus test and TNO test.

Authors: Clinical Ophthalmology 2014:8 2221–2227
Authors: Ch.Ancona, M.Stoppani, V.Odazio, C.La Spina, G.Corradetti, F. Bandello
Year of publication: 2014

Statistical evaluation in pediatric patients of the new Lang Stereopad test: a preliminary report. Free paper at ESA Congress Helsinki 2019 June 6th

Authors: Investigative Ophthalmology & Visual Science June 2013, Vol.54, 5678. doi:
Authors: Free Arvo annual meeting abstract
Authors: A.C. Piantanida M.D., M. Spera Orth., Nobili R. Orth., G. Gerosa Orth. and Tranquillini M. Orth. C.O.L. C, Cernobbio (Como), Italy.
Year of publication: 2013

Stereopsis: back in the spotlight

Good overview of the topic of stereo vision, given the increase in 3D media (TV, cinema).

Authors: Revue Medicale Suisse ISSN: 1660-9379
Authors: Revue Médicale Suisse – www.revmed.ch – 18 janvier 2012
Author: Pierre-François Kaeser Georges Klainguti
Year of publication: 2012

Testability of Refraction, Stereopsis, and Other Ocular Measures in Preschool Children: the Sydney Paediatric Eye Disease Study.

Large Australian comparative study on the use of common stereotests in young children, in which the highest testability was determined for the Lang-Stereotest II: the vast majority of children could be examined with it thanks to the absence of glasses.

Authors: J AAPOS . 2012 Apr;16(2):185-92. doi: 10.1016/j.jaapos.2011.09.017
Authors: AS Pai, KA Rose, C. Samarawickrama, R. Fotedar, G. Burlutsky, R. Varma, P. Mitchell
Year of publication: 2012

Early detection of small-angle strabismus using the PlusoptiX S04 handheld video refractometer.

Authors: PDF LMU Ludwigs-Maximilian-Universität München
Authors: Ludwig-Maximilians-Universität München
Author: Silke Kirchhoff
Year of publication: 2011

Binocular Sensory Status and Miscellaneous Tests

Author: Optician
Year of publication: 2011

History of Strabismology

Highly recommended online publication of the work History of Strabismus by G. von Noorden. Chapter 2: History of Strabismus in Europe, by J. Lang, from page 72.

Authors: Translated to English by Gunther K. Noorden
Authors: J.-P. Wayenborgh
Authors: Hans Remky, Joseph Lang, Eugene M. Helveston, Alberto Brown-Limon, Emma Limon de Brown, Gill Roper Hall, Henderson Celestino de Almeida, Geraldo de Barros, Bill Gillies, Shinobu Awaya, Yoshimasa Watanabe, Gunter K. von Noorden
Year of publication: 2002

Assessment of Adult Stereopsis Using the Lang 1 Stereotest: A Pilot Study

Authors: S. Brown, L. Weih, N. Mukesh, C. McCarty, H. Taylor
Year of publication: 2001

The Congenital Strabismus Syndrome

Abstract of a congress contribution, published in Symposium Proceedings Part II

Authors: Strabismus - 2000 Vol. 8, No.3, pp 195-199
Author: J. Lang
Year of publication: 2000

An Efficient Treatment and New Criteria for Cure of Strabismic Amblyopia: Reading and Bangerter Foils

Author: J. Lang
Year of publication: 1999

Pathophysiology of Binocular Vision and Amblyopia

Author: J. Lang
Year of publication: 1993

Eye Screening with the Lang Stereotest

Contribution to a symposium of the Joint Meeting of the American Orthoptic Council and the American Association of Certified Orthoptists. First presentation of the Lang stereo test to an American audience of orthoptists.

Authors: Veröffentlichttest
Authors: HerausgeberTest
Author: J. Lang
Year of publication: 1987

The Two-Pencil Test for Stereoscopic vision

The Two-Pencil Test of Lang is a method of comparing binocular and monocular stereo

Authors: Klin Monbl Augenheilkd 1983; 182(6): 576-581
Authors: © 1983 F. Enke Verlag Stuttgart
Author: J. Lang
Year of publication: 1983

Downloads for distribution and press

Company Logo "Lang-Stereotest AG"

In this download you will find the Lang-Stereo AG company logo in vector format "SVG" for general use.

Authors: Format "SVG"
Authors: Lang Stereotest AG
Author: Lang Stereotest AG
Year of publication: 1983