Someone with functioning eyesight wearing the VISOR would just get a mishmash of nonsensical information. Their real senses clash with what the VISOR is sending them. Coincedentally it’s also the exact same reason for another side effect. Pain. Despite Geordi not being able to see, his eyes still sort of fought the VISOR and caused him constant pain. It also had the ability to be hacked which isn’t a great option.
Easy technobabble fix - the visor suppresses the optical neurons, or it simply acts as a blindfold so the real eyes see only darkness. LaForge’s pain was because the tech wasn’t fully developed. I forget if he still had the pain with the prosthetic eyes. Hackability is another problem we probably won’t have in the real future because of quantum encryption or whatever, but it’s still a good plot device present-day people can relate to - no matter how unrealistically it’s portrayed - click-click-click… “okay, I’m in!” LOL.
Someone with functioning eyesight wearing the VISOR would just get a mishmash of nonsensical information. Their real senses clash with what the VISOR is sending them. Coincedentally it’s also the exact same reason for another side effect. Pain. Despite Geordi not being able to see, his eyes still sort of fought the VISOR and caused him constant pain. It also had the ability to be hacked which isn’t a great option.
Easy technobabble fix - the visor suppresses the optical neurons, or it simply acts as a blindfold so the real eyes see only darkness. LaForge’s pain was because the tech wasn’t fully developed. I forget if he still had the pain with the prosthetic eyes. Hackability is another problem we probably won’t have in the real future because of quantum encryption or whatever, but it’s still a good plot device present-day people can relate to - no matter how unrealistically it’s portrayed - click-click-click… “okay, I’m in!” LOL.