Which of the following conditions would indicate the need for a lens with a thinner edge design?

The need for a lens with a thinner edge design is primarily influenced by considerations related to comfort and the overall fit of the lens. A thinner edge design can significantly enhance comfort, particularly for patients with dry eye conditions.

When the edges of the lens are thinner, they are less likely to interfere with the eyelid movement during blinking, reducing mechanical irritation and promoting a smoother interaction with the eye. This is especially beneficial for individuals with dry eyes, as they typically experience discomfort from contact lenses. A design that minimizes edge thickness contributes to a more comfortable wearing experience, improving tolerance and wear time for patients prone to dryness.

Other factors mentioned, such as high astigmatism, low tear film break-up time, or excessive lens weight, might require different design considerations but do not specifically point to the need for a thinner edge design. Thicker edges could be necessary for stability in high astigmatism, while issues related to tear film or lens weight typically require other modifications to improve lens performance or fit rather than specifically addressing edge thickness alone.