title: Pupil size: The Beijing Eye Study.
authors: Ya Xing
authors: YX
authors: Wang
authors: Liang
authors: L
authors: Xu
authors: Qi Sheng
authors: QS
authors: You
authors: Hua
authors: H
authors: Yang
authors: Jost B
authors: JB
authors: Jonas
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001699:Biometry; D001794:Blood Pressure; D015992:Body Mass Index; D002681:China; D003430:Cross-Sectional Studies; D003941:Diagnostic Techniques, Ophthalmological; D005260:Female; D006801:Humans; D007498:Iris / Q000033:anatomy & histology*; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D011680:Pupil; D012030:Refractive Errors / Q000175:diagnosis; D012737:Sex Factors