Certified Paraoptometric (CPO) Practice Exam 2025

What type of lens are patients more likely to "feel" on their eyes, particularly during the adaptation period?

1. Soft

2. Rigid

3. Gas-permeable

4. Multifocal

The correct answer is: Rigid

Patients are more likely to "feel" rigid lenses on their eyes during the adaptation period due to their nature and design. Rigid lenses are typically made from a harder material, which doesn't conform as easily to the shape of the eye as soft lenses. This can lead to a greater awareness of the lens itself, especially for individuals who are unaccustomed to wearing contact lenses. The adaptation period for rigid lenses can involve a significant adjustment, as the patient becomes accustomed to the way the lens interacts with their eye, leading to sensations that are distinct from those experienced with softer, more pliable lenses that tend to be less noticeable once properly fitted. Soft lenses, while they may also require some adaptation, are generally more comfortable for most patients from the start due to their flexibility and moisture retention properties. Gas-permeable lenses combine certain benefits of both soft and rigid lenses but usually still have a lower profile that can reduce awareness over time. Multifocal lenses also present their own unique challenges, primarily related to vision rather than the feel of the lens itself. Thus, the rigid lenses are most closely associated with a noticeable sensation on the eye, especially during initial usage.