How should vertical depth relate to face length?

How should vertical depth relate to face length?

• A. The vertical depth should be greater for shorter faces.
• B. The vertical depth should be the same for all faces.
• C. The vertical depth should increase for longer faces and decrease for shorter faces.
• D. The vertical depth should be independent of face length.

Answer: (C)

Vertical depth in eyewear should be proportional to face length. When a face is longer, you need a taller (greater) vertical depth so the lenses provide enough vertical coverage and keep the optical centers in a comfortable, corrective position relative to the pupils. This also helps the frame look balanced on a longer face. Conversely, on a shorter face, a smaller vertical depth is appropriate to avoid a frame that looks oversized, to prevent the lower edge from intruding on the cheek or lid, and to keep the pupil aligned within the lens for proper vision. Therefore, the depth should increase for longer faces and decrease for shorter faces. Options that suggest the depth is the same for all faces or independent of face length don’t account for these proportional fit considerations.

Vertical depth in eyewear should be proportional to face length. When a face is longer, you need a taller (greater) vertical depth so the lenses provide enough vertical coverage and keep the optical centers in a comfortable, corrective position relative to the pupils. This also helps the frame look balanced on a longer face. Conversely, on a shorter face, a smaller vertical depth is appropriate to avoid a frame that looks oversized, to prevent the lower edge from intruding on the cheek or lid, and to keep the pupil aligned within the lens for proper vision. Therefore, the depth should increase for longer faces and decrease for shorter faces. Options that suggest the depth is the same for all faces or independent of face length don’t account for these proportional fit considerations.