He might like a book on fishing!
My sister has found, as she ages and her sight changes that reading is not as easy & fun as it was in our youth.
We have come to a dim understanding that maybe, just maybe, people who find that it strains their eyes might not LIKE to read as much as we do.
She used to stitch on 22 to the inch (22 to the 2.54 cm>) fabric and could SEE the fibers in the threads of the fabric and the embroidery floss. No longer - she is now stitching on 14 ct and thinking that the next few projects will need to be 11 count. She is also noticing a strain at work (engineer - lot of reading - both paper and computer screen) and isn't reading as much "for fun" when she gets home.
I am refusing VorGuy's offer of eye surgery as I still have pretty good close vision and don't want to risk loosing it when the doctor tries to "adjust" my vision to be better overall - the results are not guaranteed (I like to sew, embroider, knit, and read). VorGuy was the next thing to legally blind without his glasses - so he risked very little and is THRILLED not to have to wear anything but sun glasses any more! He has three pairs (unless he's lost another pair - we've bought five pairs since the surgery).
Sometimes you can convert a non-reader to a reader if you offer a really, really good book on the right subject.
My favorite subjects are myriad - but I'm a known addict. VorGuy "discovered" science fiction with DUNE - but hates The Cold Equations (spoiler - he insists that there had to have been a way for the stowaway to stay on board and live).
All wonderful SonInLaw might need is the right book - his alma mater, fishing, or possibly football might do it - but AFTER he finishes his degree. Nobody wants to distract a student from his school books...............