The objective assessment of long-term effectivity of lateral tarsal strip in high laxity involutional entropion and ectropion
Author: Adam Kopecký
Base Hospital / Institution: University Hospital Ostrava
ePoster presentation
Abstract ID: 24-315
Purpose
Our study aimed to prove effectivity of Lateral Tarsal Strip in ectropion and entropion with objective measurements, obtained with the Vectra M3 3D Imaging system.
Methods
20 patients with involutional ectropion or entropion who were indicated for unilateral LTS were included in the study. 3D image of their whole face was acquired with the Vectra M3 imaging system. The measurement was acquired twice over six months: in the morning before the surgery, and 180 (+/-10) days after the surgery. 52 anthropometric points were marked on each eye, and subsequently, 45 parameters on each eye and 4 parameters between both eyes were measured. Statistical analysis of measurements between both groups was made. As only one eye underwent surgery, the second eye was used as a control.
Results
Most parameters in the control group remained the same after six months, without statistically significant differences. In the eyes where surgery was performed, statistically significant differences (p<0.05) were observed in many parameters connected to the lower eyelid – a significant decrease in the palpebral fissure height (PFH) by a median of -0.763 mm (p=0.011) in patients with entropion, and by -3.243 mm in patients with ectropion. PFW was decreased in patients with ectropion, but not with entropion.
The outer intercanthal distance (ExD) exhibited a marked reduction by -1.696 mm (p=0.008) in patients with entropion and by -2.148 mm in patients with ectropion, which is indicative of improved eyelid positioning and symmetry.
Additional parameters showing significant changes included the lower palpebral margin length (LPML) and its middle section (LPMLm) ( -1.612 mm (p=0.015) and -1.626 mm (p=0.035) respectively in entropion patients, and by -3.935 mm and -4.072 mm in ectropion patients).
Conclusion
The study objectively shows that the changes after LTS surgery are long-lasting and that the surgery objectively changes many parameters connected to the position of the lower eyelid. The use of the Vectra M3 3D Imaging system provides a reliable method for measuring surgical outcomes.
Additional Authors
| First name | Last name | Base Hospital / Institution |
|---|---|---|
| Jan | Nemcansky | University Hospital Ostrava |
| Anezka | Adamovska | Technical University of Ostrava |
| Alexander C. | Rokohl | University Hospital Cologne |
| Ludwig M | Heindl | University Hospital Cologne |
