which is better for the eyes: air 15" or pro 14"?

The 14” MBP has higher resolution and is brighter with more contrast. For most people, that results in a better viewing experience with less eye strain.

If you get the Nano-texture display (only available on the Pro), that reduces glare and reflections, also resulting in a better viewing experience in brightly-lit environments.

filippo238 wrote:

I am looking for a new computer to buy. I do research and I value the ability to read well on my pc. I am wondering whether in terms of eyes fatigue it is better the larger screen on the 15” air or the ‘pro’ but smaller screen on the 14” pro. Thank you

they are so close in size it is hard to believe you would notice any difference in your "ability to read."

Displays are measure on the diagonal.

go look for your self at any store that carries Mac if you have some doubt.

Please note:

All Displays have resolutions that can be changed on the fly.