Aims: One of the most commonly performed operations in aesthetic, plastic, and reconstructive surgery is rhinoplasty, the aim of which is to construct an altered nasal shape, either for aesthetic or functional reasons. The lateral osteotomy is the most traumatic step of rhinoplasty, and is generally difficult to perform. The lacrimal system can be damaged during the lateral osteotomy procedure. In this study, we aimed to measure the distance between the lacrimal system and the lateral osteotomy line, and to determine the safe and ideal osteotomy level, which is very important in rhinoplasty procedures. We also evaluated the safe relationship of this osteotomy level with the lacrimal system by constructing a three-dimensional model.