People hold onto their technology and their idea of technology too long. I see people bringing in Windows XP and Windows 2000/ME systems in to be repaired and I just shake my head.
It's 2017 people, let the 18 year old equipment and operating systems go. Let 'em go. It's okay, we all have to give up our teddy bear when we reach a certain age, our binky when we stop teething, and our erector sets when we grow up. Moving on is part of life.
Windows 10 is of higher contrast by default. Lots of blacks with white writing, which will be good for those old eyes.