Dr.S.Lakshmi , Tran., “PREVALENCE AND RISK FACTORS OF PTERYGIUM AMONG OUTDOOR WORKERS ATTENDING AN OPHTHALMOLOGY OUTPATIENT DEPARTMENT: A CROSS-SECTIONAL STUDY”, CDF, vol. 51, no. 3, pp. 438–446, Mar. 2022, doi: 10.48047/sj2f2p60.