Compliance: _____% of GP patients had perfect compliance.

• A. 0.4%
• B. 4%
• C. 40%
• D. 8%

Answer: (A)

Understanding compliance means recognizing what “perfect” adherence really means: every instruction followed exactly, at every step, with no slips. For gas-permeable lens wearers, that includes proper cleaning and disinfection, using fresh solutions, keeping the case clean, avoiding water exposure, sticking to replacement schedules, and keeping up with follow-up visits. In practice, even highly motivated patients make at least one misstep somewhere along the line, so a truly flawless record across all behaviors is exceedingly rare. That’s why the smallest percentage among the options best reflects reality—perfect adherence is such an uncommon outcome that it’s represented by a tiny fraction. The larger percentages would imply many more patients are flawlessly compliant, which doesn’t match typical patterns of GP lens care.