You may want to get a checkup from an optometrist. No joke. I think almost everyone is affected by age-related degeneration of their vision at some point or another.
Well coincidentally i've been to an optometrist in a hospital about a year ago, my eyes are perfect (i don't have glasses.)
If i open https://news.ycombinator.com/news on my Macbook pro retina 15" i see news items 1 to 22 in a tiny font.. so i zoom to about 10 items which i find much easier to read (bigger text and less info), and using pinch to zoom you can do it very easily - in Safari.
If i open https://news.ycombinator.com/news on my Macbook pro retina 15" i see news items 1 to 22 in a tiny font.. so i zoom to about 10 items which i find much easier to read (bigger text and less info), and using pinch to zoom you can do it very easily - in Safari.