REFERENCES
- Kozol F, Capone RC, Kozol ND. Determining the vertical and horizontal positioning of multifocal and progressive lenses. Surv Ophthalmol 1998; 43: 71–82.
- Brooks CW, Borish IM. System for Ophthalmic Dispensing. 3rded.St Louis, Missouri: Butterworth‐Heinemann, 2007.
- Wilson D. Practical Optical Dispensing, 2nded.Sydney: Open Training and Education Network (NSW). Distance Education, 2006.