Meta Fought a Critic. The Screen Debate Is Missing a Whole Category.

Subject line: Meta fought a critic. Here's the screen debate nobody's having.

This week The Guardian reported that court documents show Meta staff discussed a "whisper strategy" to undermine Jonathan Haidt — the social psychologist whose Anxious Generation pushed online-safety policy into the mainstream. Staff reportedly considered ways to get the academic community to disavow him.

I want to set aside the obvious read, which is "company behaves like a company." Here's the read I keep coming back to instead.

The entire screen debate is built on one assumption: that time on screens is a cost.

Restrict it. Cap it. Delay it. Ban it in schools. Every remedy on the table is a subtraction. And some of that is warranted — passive scrolling is passive, and there's a real conversation to have about it.

But "screens are a cost" is not a law of physics. It's a design choice. And for one specific group of people, it's a choice that has quietly wasted decades of usable time.

Roughly 2–3% of people have amblyopia

Lazy eye. The conventional story is rigid: catch it in childhood, patch the strong eye, hope the visual system wires up before the window closes. After that you're generally told to manage and move on. Adult treatment exists, but the tools have barely changed — adhesive patches, red-blue glasses, and exercises nobody enjoys.

Meanwhile, the headset on the shelf has become capable of something specific: rendering a different image to each eye, live, with independent per-eye control over blur, contrast, brightness, gamma, and opacity. That's exactly the capability amblyopia training needs. It's been used almost entirely for games.

What we built with it

I work with Seven Sports on Amblyotube, software for Meta Quest. It's not a game, and it's not a medical device. It's a set of visual coordination and attention exercises wrapped around videos you'd already watch.

Mechanically, here's what the two eye feeds actually do:

  • Your dominant eye gets a gentle, adjustable digital blur.
  • Your weaker eye gets a sharpened view, where an AI sharpener detects human figures and selectively emphasizes them — a red outline tracing silhouettes, a yellow-green highlight glow, and a pulsing flicker at an adjustable rhythm.
  • Optional wedge occlusion blacks out part of each eye's view so each eye sees unique parts of the scene, cutting binocular rivalry.
  • A magenta focus cue in the lazy eye's view pairs with a subtle neutral grey dot in the dominant eye's view. Track them and they merge into one cohesive 3D image. That merging is the skill.

Setup is deliberately short. You pick your affected eye — left or right — and a severity preset (mild, moderate, severe), or you run the built-in LogMAR vision check: Landolt C optotypes at a virtual 3-meter distance, up to 30 trials per eye, which can update the therapy profile to match what it detects. Then you launch a video in a virtual room, or in Room View using AR passthrough.

The boring detail that actually decides whether it works

Compliance.

Every home vision program dies the same death: the exercise is dull, you skip a day, then a week, then it's a drawer. So the most important design choice here isn't the shader — it's that the training happens inside content you already wanted to watch. There's also an offline catalog of child-friendly videos for when there's no network, and the whole control panel works with controllers or hand tracking.

Recommended: 30–40 minutes a day, max one hour, ages 13+. That's an ordinary evening of YouTube, reorganized.

And the honest framing: Amblyotube is a supplementary vision training and assistive tool for binocular coordination and depth perception. Not a diagnosis, treatment, or cure. It doesn't replace your eye doctor — it's something to bring to them.

One calibration note worth repeating, because it's the failure mode: selecting the wrong affected eye trains the dominant one instead. The built-in acuity check exists partly so you don't have to guess.

Why I'm telling you this now

Because the Haidt story is going to produce another round of "screens bad" discourse, and both sides of it will keep assuming screen time is purely a cost. For some people, some of that time could be doing rehabilitative work instead. The hardware is already in the room. What was missing was the assumption that it could be used this way.

Amblyotube is on the Meta Quest App Store: https://www.meta.com/en-gb/experiences/amblyotube/25906906972338493/

If you or someone you love has lazy eye and was told the window closed — worth a conversation with your eye care professional, and worth a look.

— Recommended 30–40 minutes daily, maximum 1 hour. Ages 13+. Supplementary vision training and assistive tool for binocular coordination and depth perception — not a diagnosis, treatment, or cure.