If your vision’s not perfect it helps to have a good magnifying glass. I saw a commercial video magnifier – basically a small video camera on a swing arm which you connect to a television set and realized a DIY solution could be far better – using a webcam for far higher resolution than a television set.
An adjustable desk lamp which can be aimed down.
A webcam and computer display. It helps to have a large monitor.
A 1/4"-20 bolt, about 1.5 inches long.
A 1/4"-20 nut.
A 1/4"-20 free spinning washer nut.
The hardware is available at any decent hardware store for about $1.50.
This project is very similar to my swing-arm lamp, but fixed in a single position to optimize it for magnifying reading materials.
Step 1: Drill hole
Drill a 1/4 inch hole in the lamp’s light shield. Clean any burrs out the hole.
You’ll want to place the hole in a place where the mounted webcam will face down toward the table.