Unilateral NGAU in Nepali population is strongly associated with present or past smoking, not strongly associated with stress factor, relapses mostly in summer season, and shows HLA-B27 gene positivity in slightly >50% population. Other than pain, redness, photophobia, and decreased vision, watering can also be one of the presenting symptoms of NGAU cases.
Manandhar et al. (Mon,) studied this question.