Which statement is true about a steep lens?

Which statement is true about a steep lens?

• A. Steep lens leads to minimal movement and inadequate tear exchange
• B. Steep lens leads to excessive movement
• C. Steep lens results in minimal movement and inadequate tear exchange
• D. Steep lens improves comfort

Answer: (C)

Fitting soft lenses hinges on how closely the lens curvature matches the cornea, which determines how much the lens moves with blinking and how well tears under the lens are refreshed. When a lens is steeper than the cornea, it sits tighter on the surface, so it tends to move less with each blink. That reduced movement means the tear film under the lens isn’t cycled as effectively, leading to inadequate tear exchange. So the true statement is that a steep lens results in minimal movement and inadequate tear exchange. A lens that moves excessively is typically too flat, and a steep lens can indeed be less comfortable because tear exchange is limited and the lid and corneal surface experience more pressure from the tight fit, rather than improving comfort.

Fitting soft lenses hinges on how closely the lens curvature matches the cornea, which determines how much the lens moves with blinking and how well tears under the lens are refreshed. When a lens is steeper than the cornea, it sits tighter on the surface, so it tends to move less with each blink. That reduced movement means the tear film under the lens isn’t cycled as effectively, leading to inadequate tear exchange. So the true statement is that a steep lens results in minimal movement and inadequate tear exchange. A lens that moves excessively is typically too flat, and a steep lens can indeed be less comfortable because tear exchange is limited and the lid and corneal surface experience more pressure from the tight fit, rather than improving comfort.