Does his eye still seem to be doing well? I am experiencing the same issues you were.
he is doing just fine as of late
after this post he had a few minor issues, but they cleared up after a full head shed and close assisted care. if your dragon is experiencing the same issues, my best (temporary) advice would be to:
1) move your beardies basking spot a safe distance from their MVB if you are using one, if using a UV i would suggest allowing more opportunity for shade,
2) if eye is watering apply one drop of saline solution in the eye twice a day until whatever is lodged in seems to come out or watering seems to stop, but do not do more than 2 drops a day and use sterile saline solution,
3) monitor your dragons behavior closely, watch for voluntary eating (offering them food close up/while they are stationary does not count), inspect the eye for excessive redness or eyes being "glued shut", excessive bulging, and be sure to supplement food with multivitamins,
4) simply keep your enclosure for them clean, get rid of any dust that may be built up on the lid, scrub the glass / walls of the tank, ect. it can make a world of difference in the recovery process for their sensitive eyes.
if you have any questions as to what i did through this entire process and the aftercare of my minor scare let me know!