At the company I work for UI accessibility issues are automatic high priority bugs. You'll be an asset (as a frontend developer) to any company that values accessibility (and I'm certain that many do).
Contrary to your concerns, I think that being visually impaired and being a frontend developer will most likely open up opportunities rather than close them down.
Contrary to your concerns, I think that being visually impaired and being a frontend developer will most likely open up opportunities rather than close them down.