A new digital image analysis system for measuring blepharoptosis patients' upper eyelid and eyebrow positions
| Autor: | Tomokazu Nishihira, Hiroyuki Ohjimi, Akiko Eto |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Eyebrow Corneal limbus Ptosis mental disorders Image Interpretation Computer-Assisted medicine Photography Blepharoptosis Humans Aged Orthodontics Measurement method business.industry Healthy subjects Eyelids Middle Aged eye diseases Surgery body regions medicine.anatomical_structure Case-Control Studies Digital image analysis Female sense organs Eyelid medicine.symptom Corneal ring Eyebrows business Software |
| Zdroj: | Annals of plastic surgery. 72(2) |
| ISSN: | 1536-3708 |
| Popis: | PURPOSE To accurately assess eyelid and eyebrow position, we have developed a new measurement method using a digital image analysis system. MATERIALS AND METHODS (1) Plotting the corneal limbus by transferring to the software digital images of the patient's eyes in the primary gaze position; (2) determining the corneal ring, center, and longitudinal diameter; and (3) measuring the upper eyelid and eyebrow position. The method was tested on 24 patients with senile blepharoptosis and 45 young healthy eyelids without ptosis. RESULTS The upper eyelid position of patients with blepharoptosis was significantly lower, and their eyebrow position is significantly higher than those of healthy subjects. The upper eyelid and eyebrow position of the patients with blepharoptosis corelated, but no correlation was observed in the healthy subjects. CONCLUSION Our measuring system is a simpler, easier, and more accurate way of measuring both upper eyelid and eyebrow position than are currently used techniques. |
| Databáze: | OpenAIRE |
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