Novel artificial eye service evaluation using patient reported outcome measures

Abstract

Background: This service evaluation explores patient reported outcomes from patients provided with high definition ocular prostheses (artificial eyes).

Methods: Validated patient questionnaires (FACE-Q, DAS24 and HADS) were utilised to evaluate patient experiences of their new ocular prosthesis. 10 patients were included in the service evaluation, which was conducted between December 2018 and September 2019. Descriptive analysis of the mean and 95% CI was undertaken for all questionnaires. Statistical analysis was performed using SPSS 21 Principal Component Analysis (PCA) for FACE-Q questionnaires. Correlations were significant when factor loading is at α > 0.4.

Results: A questionnaire response rate of 80% was achieved (n = 8). PCA analysis showed the number of variables tested could be reduced. Two principal components (PC1 and PC2) had very good to excellent internal consistency between variables with factor loading (α = 0.7-0.9). PC1 contained questionnaires 1-7, all of which were highly correlated. PC2 contained question number 8 with a factor loading of α = 0.8. This indicates good reliability, validity and responsiveness.

Conclusions: We hope to demonstrate the importance of service evaluations with respect to rapidly evolving technological advances in medical devices, pharmaceuticals and imaging modalities. Further feasibility and full clinical studies are required to confirm the positive results of the novel artificial eye service we have evaluated with respect to the traditional approach.

Fig. 1. Patient pathway.

Flowchart describing patient flow through the new ocular prosthesis service [4].

Fig. 2. New ocular prostheses appearance.

Three cases demonstrating the new ocular prostheses with different iris colours provided by the service. The artificial eyes are as follows: top (patient’s left eye with brown iris), middle (patient’s right eye with green iris), bottom (patient’s left eye with blue iris).