Objective Assessment of Nose Tip Light Reflections in Rhinoplasty

Öztürk A, Sözen T, Karcı HB, Göde S.

What this paper says

Comparing 40 operated noses against 20 unoperated ones judged good-looking, the operated group had lower brightness ratios at the tip and lower satisfaction scores, and the two measures correlated positively.

Overview

The way light falls across the nasal tip is what makes it read as natural or operated. This study used simple screen software to measure the brightness of two tip areas in photographs, and tested whether those measurements track with how people rate the appearance.

Sections of note

40 patients who had external open approach rhinoplasty were selected at random, regardless of technique.
20 participants with a good-looking nose and no surgical history served as the control group.
Brightness of the facets and infratip lobule was measured using Digital Color Meter in macOS.
A visual analogue scale was used as the subjective outcome measure and compared with brightness ratios.
Mean brightness ratios of operated noses were statistically lower than the control group.
Visual analogue scores of operated noses were also statistically lower than the control group.
A significant positive correlation was found between brightness ratios and visual analogue scores in all groups. Level of evidence IV.

What it means for a patient

Operated noses in this sample showed sharper shadow contrast at the tip than unoperated noses judged attractive.
Noses with better aesthetic ratings had more symmetric and subtle facets and infratip lobule.
The measurement can be done with software already present on a standard computer.
Limits: 40 operated and 20 control participants, no standardization of surgical technique, and photographic lighting affects brightness even with a ratio used to control for it.

Why this paper matters

Tip appearance is normally assessed by eye, and this offers a cheap numeric proxy that correlates with subjective judgment. It also quantifies a difference between operated and unoperated noses. Whether the measure can guide surgical decisions rather than just describe results is untested.

Terms

Facet: The small triangular hollow between the nasal tip and the nostril rim.
Infratip lobule: The area of the tip just below its highest point.
Brightness ratio: The relative brightness of two areas, used to control for lighting differences.
Visual analogue scale: A line on which a rater marks a judgment.
Open approach: Surgery using an external incision across the columella.

Summary written by rhinoplasty.cc from the abstract, 2026-09-09; not medical advice. The authors' own abstract follows.

From the abstract

“To assess the objective and subjective analysis of facet and infratip lobule in postoperative digital pictures of rhinoplasty patients and compare them with the people with good-looking noses. With the help of simple software that measures the brightness of the pixels, we investigated the relation between light…”

Excerpt; the full abstract is on PubMed.