A lower wetting angle is better.

A lower wetting angle is better.

• A. Higher
• B. Zero
• C. Negative
• D. Lower

Answer: (D)

Wetting angle reflects how well the tear film spreads on a lens surface. A smaller (lower) contact angle means the liquid wets the surface more readily, which comes from higher surface energy and more hydrophilic behavior. For soft contact lenses, better wettability translates to a more stable tear film, less lens awareness, and greater comfort during wear. So the statement that a lower wetting angle is better aligns with how surface wettability improves tear film distribution on the lens. Higher angles indicate poorer wetting, and negative angles aren’t a meaningful measurement in this context; zero would imply perfect wetting, which is theoretical but not typical in practice.

Wetting angle reflects how well the tear film spreads on a lens surface. A smaller (lower) contact angle means the liquid wets the surface more readily, which comes from higher surface energy and more hydrophilic behavior. For soft contact lenses, better wettability translates to a more stable tear film, less lens awareness, and greater comfort during wear.

So the statement that a lower wetting angle is better aligns with how surface wettability improves tear film distribution on the lens. Higher angles indicate poorer wetting, and negative angles aren’t a meaningful measurement in this context; zero would imply perfect wetting, which is theoretical but not typical in practice.