Arizona State Board Of Optometry Practice Exam

What essential information must be included on a prescription for contact lenses?

1. Powers, color, and shape

2. Powers, BC, and diameter

3. Powers, tint, and brand

4. Powers and durability

The correct answer is: Powers, BC, and diameter

The correct answer identifies the essential information that must be included on a prescription for contact lenses as powers, base curve (BC), and diameter. Powers refer to the refractive strength needed to correct the patient's vision, which is crucial for ensuring that the lenses provide the necessary visual clarity. The base curve is important because it affects the fit of the lens on the eye, influencing comfort and health. Additionally, the diameter of the lens is essential for proper placement on the eye, ensuring that the lens covers the cornea adequately and provides optimal vision correction while maintaining eye safety. In contrast, other options include elements that are not typically required for a contact lens prescription. For example, mentioning color or shape may be relevant for cosmetic purposes or certain specialized lenses but does not constitute essential elements necessary for vision correction. Similarly, tint and brand can be important in specific contexts, but they do not take precedence over the technical specifications required to ensure a proper fitting and functional lens. Durability, while it can relate to lens material choices, is also not a standard requirement for the core prescription details. Thus, powers, base curve, and diameter are the critical factors that ensure the lenses will work effectively and fit correctly on the patient’s eye, which is why