Here are some tips to help improve your access to websites.
How to Zoom in on a Webpage
You can increase or decrease in 10% increments by using keys on the keyboard. To zoom in, press Ctrl + plus sign (+), To zoom out, press Ctrl + minus sign (-). To restore to full screen, press Ctrl +0. If you have a scrolling mouse (mouse with a wheel) you can hold down the Ctrl key and scroll the wheel to zoom in and out.
There are many companies that offer software to improve access to web sites, here are a few guide sites.