Khan, Bilal, Ahmed Sohail, Tallat Anwar Faridi, Ubaidullah Jan, Fatima Zahid, and Ishrat Parveen. 2021. “Relation Between Different Grades of Pterygium and Amount of Induced Corneal Astigmatism: Different Grades of Pterygium”. Pakistan BioMedical Journal 4 (2):59-63. https://doi.org/10.54393/pbmj.v4i2.74.