Bite indicator for people with low vision

I was recently diagnosed with ms and it has affected my vision.  I like pan fishing and use to always use a spring bobbe. I now have a hard time seeing the spring. Are there any bite indicators out there for people with low vision?

Try an easybite bobber, very visible, can probably put a small light stick in the tube which should help.

Maybe rig one of those little lights for a night bobber to your spring JB weld maybe 

You could try contacting Fishing Has No Boundaries in Hayward Wi. They are very well informed on adaptive equipment for fishing. Good luck in your search. Jim

If you use a longer single wire spring, how about 1/2" masking tape folded over on itself, kinda like a flag on a pole. Cut to whatever width  will work for you and color red with a magic marker?