Bilal , A. ., Sattar, M. ., & Khan, M. . . (2022). Frequency Of Refractive Error in School Going Children Visiting Eye OPD with Complain of Headache and Eye Strain: Refractive Error in School Going Children. Pakistan BioMedical Journal, 5(8), 31–35. https://doi.org/10.54393/pbmj.v5i8.678