Nothing you can do about it with computer software settings or monitor's front panel settings. Most monitors will exhibit similar characteristics. If you play with the monitor's front panel horizontal position and width controls, as well as trapezoid settings, you will be able to see more of the cursor along the edge of the screen. Older monitors had both electronic and manual focus settings. Correcting it fully involves very fine adjustments of the monitor's internal components. Simply put: The horizontal deflection of the electron beam(s) in the CRT is exceeding the focal length from the electron gun to the phosphor coating on the inside of the CRT face. Sorta like sticking your head so far down a barrel you can't see the rim of the barrel in your peripheral vision.