Certified Paraoptometric Practice Test

Which of the following tilts results when a pair of spectacles is tilted so that the bottom of the lenses is closer to the face than the top?

1. Retrotint

2. Retrace

3. Pantoscopic

4. Face Form

The correct answer is: Pantoscopic

The tilt in question refers to the orientation of the spectacles where the bottom of the lenses is closer to the face than the top, which is known as pantoscopic tilt or pantoscopic angle. This type of tilt is designed to enhance the optical performance of the lenses by aligning them more closely with the user's line of sight, especially for tasks that require looking down, such as reading or using a computer. When spectacles are designed with a pantoscopic tilt, it helps in improving the field of vision and can reduce eye strain, as the lenses are positioned in a way that they optimize visual clarity and comfort. Pantoscopic tilt is often considered an important aspect of frame fitting, as it ensures that the lenses perform well in relation to the natural inclination of the human eye. Understanding the other options is helpful for clarity: Retrotint refers to a type of lens tint, not related to tilt; retrace generally refers to a method of analysis or tracking, not a design characteristic in eyewear; and face form pertains to the curvature of the frame designed to match the contour of the face, which is different from the tilt of the lenses. Thus, pantoscopic tilt is specifically relevant to lens orientation in relation to the face.