The Science Behind WideEye

By The WideEye Team

Most companies in this category publish a page like this, and most of them list studies selected because they point in one direction. This page includes the ones that do not. Anyone considering months of daily practice already knows what the marketing says, so the findings that complicate the case are the ones worth publishing.

What WideEye is#

WideEye is a browser-based general wellness product. It presents visual tasks as games, structured into short daily sessions, built around principles drawn from binocular and dichoptic vision training research.

WideEye is not a medical device. It is not cleared or approved by the FDA. It does not diagnose, treat, cure, mitigate, or prevent any disease or condition, including amblyopia, strabismus, convergence insufficiency, or binocular vision dysfunction. It is not vision therapy, which is a clinical service delivered by licensed optometrists, and it is not a substitute for one.

Anyone with a diagnosed vision condition, or who suspects one, should start with an examination by an optometrist or ophthalmologist. Nothing on this site changes that, and no software provides what an examination provides.

The mechanism the research describes#

In amblyopia, the affected eye is usually structurally normal. The problem sits in the visual cortex, where a developing brain receiving mismatched input from the two eyes suppresses the weaker signal rather than attempting to fuse conflicting images.

The classical treatment approach follows from a direct reading of that: cover the strong eye, force the weak one to work. Occlusion therapy is well established in children and remains the standard of care alongside optical correction.

Dichoptic training starts from a different premise. If suppression is an active process rather than a passive weakness, then the target is the suppression itself, and addressing it requires both eyes engaged simultaneously with different images, balanced so the weaker eye's input can compete. Li, Hess and colleagues, publishing in Current Biology in 2013, provided direct evidence that reducing suppression through dichoptic presentation induced greater plasticity than forced use of the amblyopic eye alone.

That mechanism is what WideEye's exercises are built around. Whether it translates reliably into clinical benefit is a separate question, and the rest of this page addresses it.

What the evidence supports#

Adult visual plasticity is real. The most consistent finding across this literature is that the adult visual cortex retains more capacity for change than the classical critical period model allowed. A review by Benjamin Thompson at the University of Waterloo and colleagues in the European Journal of Ophthalmology summarizes that evidence and identifies binocular approaches as a promising direction.

Dichoptic training produces measurable changes in adults. A 2015 study of 30 adults found contrast sensitivity improved across all spatial frequencies tested. A 2018 study of 13 adults who had already completed monocular training found a further 27% gain in stereoacuity — though visual acuity in the amblyopic eye did not change at all. A 2017 virtual-reality study of 17 adults found significant gains in both acuity and stereoacuity.

Note what that list does not say. These are three different outcome measures, and no one of these studies moved all of them.

Training duration predicts outcomes; age does not. In a 2025 individual-participant-data meta-analysis published in Ophthalmic Epidemiology, baseline visual acuity and total training duration emerged as significant predictors of visual gains, while age showed no significant effect on visual acuity or stereopsis outcomes. That finding is the most defensible reason to think the question is not closed for adults past the critical period.

Limitations of the evidence#

Dichoptic training has not been shown to outperform simpler monocular training. In the 2025 meta-analysis, mean visual acuity gains were comparable between the two approaches, 0.153 logMAR against 0.162. Dichoptic training showed an advantage in the strabismic subgroup; monocular training produced the larger pooled stereopsis gain. The mechanistic case for dichoptic approaches is strong, and the comparative clinical evidence is not yet settled.

The studies are small and the populations are narrow. The trials cited here enrolled between 13 and 30 participants, and several included only anisometropic amblyopia. The meta-analysis found strabismic and anisometropic cases responding differently to the same protocol, so results from one group should not be read as results for the other. Most report outcomes at the end of training, which leaves the durability of gains an open question. Where an outcome measure resembles the trained task, some portion of measured improvement reflects improvement at the test rather than better vision generally.

None of this research was conducted on WideEye. No clinical trials have been run on this product. The exercises draw on published principles, which is not the same as being validated, and we will not describe it as though it were.

What WideEye does not claim#

No claim is made that WideEye treats or improves amblyopia, strabismus, or convergence insufficiency. No user testimonials describing medical outcomes are published on this site. The studies above are not cited as evidence about this product, because they are not; they are evidence about a category of intervention.

What WideEye offers is a structured, gamified way to spend consistent time on binocular visual tasks. Training duration is one of the few variables the research consistently links to outcomes, so making sustained practice less tedious is a real problem to work on, and it is an honest description of what this product does.

For anyone with a diagnosed condition#

See an optometrist who works in binocular vision or vision therapy. Ask what type of amblyopia is present, whether stereopsis is measurable, and what the current thinking is for that specific presentation. Those answers vary enormously between cases and determine everything that follows.

Anyone using WideEye alongside professional care should tell their optometrist. Most will have an opinion worth hearing, and some will have specific guidance about what to prioritize.

References#

  1. Li J, Thompson B, Deng D, Chan LYL, Yu M, Hess RF. Dichoptic training enables the adult amblyopic brain to learn. Current Biology, 2013;23(8):R308–R309. https://pubmed.ncbi.nlm.nih.gov/23618662/
  2. Thompson B, Concetta Morrone M, Bex P, Lozama A, Sabel BA. Harnessing brain plasticity to improve binocular vision in amblyopia: an evidence-based update. European Journal of Ophthalmology, 2024;34:901–912. https://pubmed.ncbi.nlm.nih.gov/37431104/
  3. Tang AC, Wang X, Yang WJ, Guo JL, Li YL, Yang TY, An Z, Reynaud A, Liu LQ. Comparison between dichoptic and monocular training protocols for treating monocular amblyopia: a meta-analysis and systematic review. Ophthalmic Epidemiology, 2025;32:769–783. https://pubmed.ncbi.nlm.nih.gov/40138264/
  4. Li J, Spiegel DP, Hess RF, Chen Z, Chan LY, Deng D, Yu M, Thompson B. Dichoptic training improves contrast sensitivity in adults with amblyopia. Vision Research, 2015;114:161–172. https://pubmed.ncbi.nlm.nih.gov/25676883/
  5. Liu XY, Zhang JY. Dichoptic training in adults with amblyopia: additional stereoacuity gains over monocular training. Vision Research, 2018;152:84–90. https://pubmed.ncbi.nlm.nih.gov/28736224/
  6. Žiak P, Holm A, Halička J, Mojžiš P, Piñero DP. Amblyopia treatment of adults with dichoptic training using the virtual reality Oculus Rift head mounted display: preliminary results. BMC Ophthalmology, 2017;17:105. https://pubmed.ncbi.nlm.nih.gov/28659140/

Last reviewed 2026-08-22. If anything here is inaccurate or out of date, tell us and we will correct it.