As part of the inno­va­tion, we applied for and recei­ved appro­val for a patent for an “Appa­ra­tus and method for establishing and/or impro­ving binocu­lar vision. The patent covers the EU and the USA. Our brain-eye coor­di­na­tion trai­ning uses our patents to improve vision when using both eyes. Our patents cover a unique eye-move­ment tech­ni­que that affects each eye dif­fe­rently, for all screen and image types. The patents also protect indi­vi­dual adjust­ments of the image per eye for changes in color, shading, blur­ri­ness, and motion.

Development team

Michael Mal­mqvist
Chief Inno­va­tion Officer & Inven­tor

Michael has 27 years of expe­ri­ence in tech­no­logy deve­lop­ment and project mana­ge­ment. He has worked in various fields such as nuclear power plant main­te­nance, bro­ad­band media strea­ming, and MedTech. Michael is the inven­tor.

Rune Braut­a­set
Senior Advisor, Opto­metry

A licen­sed opto­met­rist, Rune is a pro­fes­sor in opto­metry with a back­ground in neu­rosci­ence and phy­si­o­lo­gi­cal optics. He cur­rently holds the Head of Divi­sion for Eye and Vision at Karo­linska Insti­tu­tet Depart­ment of Cli­ni­cal Neu­rosci­ence. Addi­tio­nally, Rune is an expert in binocu­lar vision


We have con­duc­ted nume­rous studies throug­hout the deve­lop­ment process in part­ners­hip with the following insti­tu­tions: Karo­linska Insti­tu­tet in Stock­holm in Neuroscience/Optometry, Linné Uni­ver­sity in Växjö within Peda­gogy, and Uni­ver­sity of Gävle within Neu­ro­lo­gi­cal mea­su­re­ments. Moving forward, we will con­ti­nue to col­la­bo­rate with aca­de­mic insti­tu­tions.

In col­la­bo­ra­tion with and sup­por­ted by:

Vergence problems, reading difficulties and dyslexia


Ver­gence pro­blems are common and affect around 10% of the popu­la­tion. It is claimed that more than 25% of child­ren are affec­ted by the incre­a­sed use of mobile devices.

Vision and reading

Reading requires several visual skills. These are accom­mo­da­tion, eye move­ments, binocu­lar vision, and pro­ces­sing. Ver­gence pro­blems are linked to binocu­lar vision.

Accom­mo­da­tion is the ability of the eye to change the focal length of the lens by chan­ging the refractive power of the lens and gain sharp­ness. This allows the eye to auto­ma­ti­cally adjust focus from seeing things in the distance and adjust to see closer objects. These distur­ban­ces can strain binocu­lar vision.

The ability of the eye to locate and fixate on an object in the visual field is refer­red to as eye move­ment skills. This focus is the result of a smooth, coor­di­na­ted move­ment of the eyes, to see and follow objects and people. The ocular motor system must provide accu­rate, rapid control for reading to allow the reader to extract visual infor­ma­tion from text. Small eye move­ments, called sac­ca­des, are incre­dibly fast. Most sac­ca­des move the eyes along the text forward (left-to-right in Swedish text for example), but about 10–20% of the sac­ca­des are in the back­ward direc­tion (regres­sion). Poor ocular motor control can lead to a sig­ni­fi­cantly higher number of regres­sions.

Binocu­lar vision is the ability to main­tain visual focus on an object with both eyes, cre­a­ting a single visual image. Lack of binocu­lar vision is normal in infants. Adults without binocu­lar vision expe­ri­ence dis­tor­tions in depth vision and visual esti­ma­tion of distance. Disor­ders of binocu­lar vision can often be more pro­ble­ma­tic in inter­me­di­ate and advan­ced stages of reading. Any con­di­tion that inter­fe­res with clear, simple, or com­for­table vision can affect reading ability. Common binocu­lar vision disor­ders can nega­ti­vely affect reading ability and produce similar symptoms such as blurred vision, double vision, hea­dache, eye pain/strain, fatigue, or feeling tired.

Com­pu­te­ri­zed ver­gence trai­ning

Manual ver­gence trai­ning has been around since the 1950s. Alt­hough these methods work, they are not very practi­cal due to the effort requi­red with moti­va­tion and super­vi­sion, along with daily trai­ning and weekly visits to a clinic.

RetCorr’s com­pu­te­ri­zed trai­ning with a desktop com­pu­ter, a 3D-screen, and 3D-glasses impro­ved both the effi­ci­ency and effecti­ve­ness com­pa­red to the manual methods. Read the full articleOur new trai­ning, imvi read, is used with a mobile app and VR-glasses. Imvi read is based on the same patent as the RetCorr solu­tion. A pre­li­mi­nary study shows that imvi read is slightly more effective than RetCorr and an exten­ded study is under­way at Karo­linska Insti­tu­tet.

Neu­ro­lo­gi­cal load

Rese­arch con­duc­ted at Gävle Uni­ver­sity, led by Pro­fes­sor Hans Richter, shows that the ver­gence system can drain the frontal cortex of up to 90% of its energy by sti­mu­la­ting eye move­ments for as little as 5–10 minutes. Thus, even minor vision-related ver­gence pro­blems can quickly drain the brain of the energy needed to perform other tasks, nega­ti­vely impacting acti­vi­ties such as reading. Read the full article.


Pro­fes­sor Chris­ter Jacob­son has con­clu­ded in his rese­arch that vision can impact people with reading/writing dif­ficul­ties or dyslexia, and that ver­gence trai­ning could have a posi­tive effect on reading for people with ver­gence pro­blems: Read the full article

Studies of our solu­tion have demon­stra­ted posi­tive results for people with reading pro­blems, dyslexia, or ADHD.

Factors behind reading & writing disa­bi­li­ties and dyslexia, adapted from Chris­ter Jacob­son

Our method has been used in several studies that show:

  • Its effecti­ve­ness in impro­ving eye coor­di­na­tion, i.e. the ver­gence fun­c­tion.
  • Its results in impro­ving reading speed and stamina.
  • Its results in redu­cing common symptoms such as hea­daches, eye pain or eye strain, con­cent­ra­tion pro­blems, fatigue, etc.

Our solu­tion bene­fits:

  • People with ver­gence pro­blems.
  • People with reading pro­blems and dyslexia.
  • People without ver­gence pro­blems but would still like to improve their eye coor­di­na­tion.