When a wearer complains they need to raise their chin to read, what should you do to the segment height?

When a wearer states that they need to raise their chin to read, it typically indicates that the segment height of their multifocal or bifocal lenses is set too low for their natural line of sight when looking down. When they have to raise their chin, it suggests that they are not looking through the optimal portion of the lens designed for reading.

Raising the segment height adjusts the position of the reading section of the lens closer to the wearer's eyes in their typical reading posture. This change allows for a better line of site through the reading segment, facilitating a more comfortable reading position and reducing the need to adjust their head. The goal is to ensure that when they look down, they are looking directly through the segment without needing to adjust their posture excessively.

Adjusting the segment height is crucial for visual comfort and efficiency in daily tasks like reading.