Fig. 3.

Photograph showing a zone used for direct NS-FUE and a zone used for pretrimmed NS-FUE. In the direct method, the hair angle and direction of the target hair and neighboring hairs are visually similar; this visual guide greatly aids in accurate punching. In contrast, in the pretrimmed method, the pretrimmed target hair exists separately without any visual guidance from the neighboring hairs; each time punching is to be performed on a new target hair, the surgeon’s eyes must readjust.