Yes. A 2018 study at Cornell University found that natural light from a window reduced eye strain, headaches and drowsiness. And a 2021 study at the Bartlett School of Architecture, University College London, found that workers in open-plan offices were most productive when sat at window desks. However, this depends on the office layout. Workers facing windows with a large number of desks behind them reported lower productivity. Possibly due to the nagging fear of co-workers talking about them!