1. The principles and practice of correcting astigmatism with soft contact lenses;Holden;Aust J Optom,1975
2. A review and discussion of crossed cylinder effects and over-refractions with toric soft contact lenses;Snyder;Int Contact Lens Clinic,1989
3. Spectacles and custom toric hydrogel toric contact lenses: A comparison of vision;Hall;J Am Optom Assoc,1994
4. Visual performance in the correction of astigmatism with contact lenses-spherical RGPs versus toric hydrogels;Snyder;Int Contact Lens Clin,1994
5. Designation of visual acuity in logarithmic units;Bailey;Optom Month,1980