My insurance covered the evaluation and 10 weekly sessions. I had convergence insufficiency, spasm of accommodation (difficulty switching between near & far) and binocular vision problems. The 10 sessions helped me tolerate reading, computer, and other close work. I was also able to start driving again. My light sensitivity mostly goes along with my headaches and I didn't notice a big change in that except that I ended up having headaches less frequently and less intensely.

If your insurance covers it, I think it's definitely worth a shot. If not, you might be able to look up some of the exercises to do at home such as Hart chart and Brock string. The very basic exercises just involve someone moving their finger in front of your face for you to track with your eyes and also following an object in toward your nose and then out again.