Hi Karen,
Like you, I had a nerve graft after surgery (19 and 20 years ago, respectively!), followed by a tear duct cauterization several months later. My opthalmologist did it, and what it means is that there is always water "pooling" in the eye, which is a tremendous improvement over the terrible (debilitating, even) dryness I had prior to that. Though that eye often has a "watery" look to it and tears too much for me to wear any eye makeup, the tradeoff was definitely worth it.
I use Celluvisc drops during the day because I find them "thicker" than other single-use drops, and am religious about wearing sunglasses outside, even on a cloudy day or at night. If you wear glasses, maybe those wraparound sunglasses--ie Solar Shields--would be good sun/wind protection for outdoor activities? You could fit them on over your regular glasses. A sports store might be a great source for specialty sunglasses. And photosensitive prescription lenses (ie the ones that darken in bright light) might be helpful to you, too.
I use Refresh PM only at night, but maybe it would help you during bikeriding or other activities where you're exposed to drying wind?
For swimming, I've found tinted swim goggles, so I never have to face the bright sun without eye protection--as soon as I pull off my sunglasses, I put the goggles on. I may look like a frogwoman walking from my chaise to the pool, but at least I'm comfy!