BigShot Screen Magnifier
BigShot is magnification program that provides up to 20x mouse area magnification. It permits greater viewing distance from the computer screen. The full-screen magnification system provides 20 adjustable levels of enlargement, from 105% to 200% (1.05x to 2x). Since part of the desktop is no longer visible once the screen elements have been enlarged, BigShot allows users to pan smoothly beyond the limits of the viewing area, by moving the mouse.
This product is discontinued by the manufacturer, but it may still be available for purchase from third party vendors. Try searching the product by name on the internet. Be careful as the manufacturer may no longer support it - or support it for long.