1. CL Council. Eye-Q study. Gallup Poll USA 1991.
2. A study of contact lens failures;Schlanger;J Am Optom Assoc,1993
3. Discontinuation of contact lens wear;Weed;Optom Vis Sci,1993
4. Briggs S. Profile of contact lens failures in Saudi Arabia. Clin Exp Optom 1996;79:255–229.
5. Symptoms experience with high Dk 30NEW lens wear and their implications in patient discontinuation;Keay;Invest Ophthalmol Vis Sci,1999