Chowdhury, Partha Haradhan, Brinda Haren Shah, and Nripesh Tiwari. “All About High Plus and High Minus Spherical Lens and Aspheric Lens”. International Journal For Research In Health Sciences And Nursing 6, no. 5 (May 31, 2020): 19–23. Accessed December 22, 2024. https://gnpublication.org/index.php/hsn/article/view/1331.