Which of the following describes a sign of a properly oriented lens?

• A. Even edges and stable placement
• B. Edge flare and movement
• C. Lens centered but with flare
• D. No movement but misalignment

Answer: (A)

When a soft contact lens is properly oriented, it sits evenly on the cornea with edges that are flush and uniform around the perimeter, and it stays in a stable position through blinking. This tells you the lens is seated correctly and not inverted or misaligned, so vision and comfort are maintained.

Edge flare and movement show the edges lifting or curling away from the cornea and the lens shifting with each blink, which indicates the lens isn’t sitting correctly or is misfit. A lens centered but with flare means the edge isn’t lying flat even though the center is aligned, signaling an improper edge fit. No movement but misalignment means the lens isn’t oriented to the pupil despite staying still—another sign it isn’t properly positioned.

So, the sign of a properly oriented lens is even edges and stable placement.