STEM Careers are not out of reach. Loosing your sight will mean that you have to find different ways of accessing the information you need to do what you need and want to do. For example: STEM requires a lot of charts and graphs, so you will need to learn how to read tactile graphics. While you can use Text to Speech programs to access information it will be more beneficial to learn to read braille. You can hear a program tell you a complex equation but you might miss details that you otherwise would catch if you were reading the material.
Look into
$1 a blind astronomer who who was the Director of Research and Development at the SETI Institute and holds a PhD in Physics. There are many resources available to you, like the National Federation of the Blind, American Council of the Blind, Perkins, and so many others. Look for your local blindness organization and they can help you find information.
Like getting into any career you need to do your research, talk to people in the field, build connections, build your skills, work as hard as you can, and definitely use all the resources available.