Digital Eye Strain: The Hidden Cost of Hyper-Focus

This post was originally written in Italian by Paolo Gambardella. It has been translated by an AI agent and may contain inaccuracies.

These days I’ve been getting to grips with the agents from Anthropic and OpenAI, and I can genuinely see improvements in the speed and quality of my work. Where I used to need developers to build prototypes, it’s now much more straightforward to tackle that kind of challenge with Claude or Codex guiding me along.

That said, I’ve recently been noticing a strange heaviness in my eyes by the end of the working day. This weekend was rough, especially Saturday. It felt as though something was stopping my eyes from even moving properly, on top of a general dryness and fatigue.

I found out — credit to Gemini, actually — that this is a pretty common problem. Using AI tends to pull us into states of hyper-focus.

Having to think forces us to take breaks

The first thing worth noticing is that before, I had to take lots of breaks to think things through, look up tutorials, or browse various forums. Everything was slower, obviously, but that also meant natural breaks for my eyes and spending longer on the same block of text.

Now, though, working with an agent means receiving large chunks of text in quick succession. You have to skim through them fast to separate the useful parts from the hallucinated ones, and more often than not you fire off another question straight away — which brings you back to reading another big wall of text.

AI interfaces with dark mode, VS Code with light mode

I’ve moved to using VS Code to manage my agents, since I find it better for keeping an eye on token usage and for other perks like keyboard shortcuts and so on.

The thing is, AI interfaces generally use a dark background, whereas in VS Code I prefer a light one. So I’m constantly switching between the two, which puts extra strain on my eyes.

It seems that parsing text-heavy content like code also makes us blink around 60% less than normal. Medicine calls it Digital Eye Strain, and it’s an increasingly widespread issue.

I hope this post helps others identify the problem. The fix comes down to:

1. Sync your fonts and sizes so everything is large enough to read comfortably
2. Reduce contrast where possible, and avoid constantly ping-ponging between different windows
3. When the AI gives you a long explanation, close your eyes and listen to it instead
4. Use CLAUDE.md or instructions.md files rather than chatting back and forth with the agent, to cut down on the number of iterations