One thing I forgot to say. My then t-doc recommended that I go out and walk in the sun without sunglasses. I did for a couple of days and then - by lucky coincidence - had my yearly eye exam. I have an eye condition and the eye doctor said that going without sunglasses is a no-no under any circumstances. I did not ask whether this would be the case for a patient with healthy eyes. Worth asking, as otherwise it probably is an effective approach - sunlight is supposed to be "activating".