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Published on: March 27, 2012
Perception of children's faces with unilateral coronal synostosis--an eye-tracking investigation
Christian Linz1, Antje B M Gerdes2, Philipp Meyer-Marcotty3
1Department of Oral and Maxillofacial Plastic Surgery, University Hospital of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany. linz_c@ukw.de.
Insights
Eye tracking reveals that untreated unilateral coronal synostosis draws attention to orbital dystopia. Surgical correction normalizes fronto-orbital asymmetry but shifts focus to midface deformities, offering an objective measure for craniofacial abnormalities.
Area of Science:
- Craniofacial Surgery
- Ophthalmology
- Perception Science
Background:
- Unilateral coronal synostosis (UCS) causes significant cranial and facial deformities, including orbital dystopia, potentially leading to social stigmatization.
- Surgical correction is common, but the impact on laypeople's perception remains objectively unevaluated.
Purpose of the Study:
- To objectively evaluate laypeople's perception of children with unilateral coronal synostosis (UCS) before and after surgical correction using eye tracking.
- To introduce eye tracking as a novel objective measurement tool for assessing craniofacial abnormalities and treatment outcomes.
Main Methods:
- Employed eye tracking to analyze the visual attention patterns of 30 laypeople viewing standardized photographs of 14 children with UCS (pre- and post-surgery) and healthy controls.
- Measured involuntary eye movements and fixations to quantify perception of craniofacial features.
Main Results:
- Children with untreated UCS and orbital dystopia attracted more visual attention compared to controls.
- Postoperative correction normalized fronto-orbital asymmetry, but the uncorrected C-shaped midface deformity subsequently became a focal point of attention.
Conclusions:
- Eye tracking provides an objective method to assess perception of craniofacial abnormalities and evaluate the effectiveness of surgical interventions.
- This study pioneers the use of eye tracking as a quantitative tool in the field of craniofacial abnormality assessment.
Purpose:
Premature unilateral coronal craniosynostosis results in distinctive cranial and facial abnormalities of varying severity, including orbital dystopia and an abnormal head shape. As the face is affected, these children may encounter stigmatization. To avoid this scenario, many parents elect for their child to undergo surgical correction. Laypeople's perception of children with either untreated or treated unilateral coronal craniosynostosis (UCS) has not yet been objectively evaluated.
Methods:
This study introduces eye tracking as an objective instrument in order to evaluate the perception of 14 children with coronal synostosis, both pre- and postoperatively. Age-matched healthy children served as a control group. Using standardized photos, the involuntary eye movements and the fixations of 30 unaffected laypeople were evaluated.
Results:
In the untreated children, whose faces were characterized by striking orbital dystopia, the eyes drew more attention than those of the healthy children. The results of our study demonstrate that the operative correction of unilateral coronal synostosis results in the normalization of the asymmetry of the fronto-orbital region, whereas the C-shaped deformity of the midface, which is not addressed via surgery, subsequently attracts more attention.
Conclusion:
Eye tracking objectively evaluates both the perception of craniofacial abnormalities and the extent of the approximation of normality after surgical correction. We introduce eye tracking as an objective measurement tool for craniofacial abnormalities for the first time.
