Soft contact lens base curves are generally fit very

Soft contact lens base curves are generally fit very

• A. Flat
• B. Slightly steep
• C. Moderate
• D. Very steep

Answer: (A)

Soft lenses depend on a gentle, forgiving drape over the cornea with enough movement for tear exchange. Starting with a flatter base curve (a larger radius) helps the lens settle evenly and sit comfortably, centering well on the eye and moving modestly with each blink. A steeper curve would grip the cornea and feel tight, while a very flat curve could lead to undue movement or instability. So, the general fitting approach is to begin with a relatively flat base curve.

Soft lenses depend on a gentle, forgiving drape over the cornea with enough movement for tear exchange. Starting with a flatter base curve (a larger radius) helps the lens settle evenly and sit comfortably, centering well on the eye and moving modestly with each blink. A steeper curve would grip the cornea and feel tight, while a very flat curve could lead to undue movement or instability. So, the general fitting approach is to begin with a relatively flat base curve.