Abstract ID: 26-127
Determinants of Ocular Prosthesis Motility: Multivariable Analysis of Socket, Eyelid, and Prosthetic Factors in Anophthalmic Patients
Author: Yinon Shapira Base Hospital / Institution: Department of Ophthalmology, Carmel Medical Center, Haifa, Israel / The Ruth and Bruch Rappaport Faculty of Medicine, Technion ‑ Israel Institute of Technology, Haifa, Israel
Presentation Type: ePoster Presentation
Purpose
To identify the clinical, anatomical, and prosthetic factors that independently determine ocular prosthesis motility in anophthalmic patients.
Methods
This prospective cross-sectional study included 107 patients with unilateral anophthalmia wearing acrylic prostheses. Horizontal prosthesis motility was graded relative to the fellow eye by three independent masked examiners using a five-point ordinal scale. Candidate predictors associated in univariate analysis (p ≤ 0.10) were entered into blockwise multivariable regression across five domains: clinical background, socket and eyelid findings, socket motility parameters, prosthesis primary gaze alignment, and prosthesis structural dimensions.
Results
Independent predictors of prosthesis motility were socket temporal motility (β = 0.36, p < 0.001), time since anophthalmia (β = –0.23, p = 0.003), prosthesis primary gaze alignment (β = 0.21, p = 0.002), socket downward motility (β = 0.20, p = 0.027), inferior fornix depth (β = 0.19, p = 0.007), and levator function (β = 0.15, p = 0.042), together explaining 67% of the variance in examiner-rated prosthesis motility (adjusted R² = 0.64). Prosthesis dimensions, demographic variables, and orbital implant status did not retain independent significance.
Conclusion
In this study, prosthesis motility was primarily associated with socket dynamics, structural socket capacity, eyelid function, and chronicity of anophthalmia. These findings highlight the importance of multiple clinical and anatomical factors in achieving natural prosthesis movement after eye loss.
Additional Authors
| First name | Last name | Base Hospital / Institution |
|---|---|---|
| Yoav | Vardizer | Department of Ophthalmology, Bnai Zion Medical Center, Haifa, Israel / The Ruth and Bruch Rappaport Faculty of Medicine, Technion ‑ Israel Institute of Technology, Haifa, Israel |
| Oren | Tomkins-Netzer | Department of Ophthalmology, Carmel Medical Center, Haifa, Israel / The Ruth and Bruch Rappaport Faculty of Medicine, Technion ‑ Israel Institute of Technology, Haifa, Israel |