Title: Face and Content Validity of an Artificial Eye Model for Dual Blade Goniotomy
Category: Glaucoma
Author: Andrew Swift
Co-authors: Derek Waldner, Adam Gorner, Yusuf Ahmed, Helen Chung, MD, Gavin Docherty, MD, Patrick Gooi MD

Purpose: To determine the face and content validity of an artificial eye goniotomy model (SimulEYE KDB model, InsEYEt, Westlake Village, CA) by surveying ophthalmologists with varying experience using a goniotomy blade (Kahook Dual Blade, New World Medical, Rancho Cucamonga, CA, USA) following a 30-minute wet-lab course using the model.

Study Design:  Survey Report 

Methods:  13 ophthalmologists participated in a surgical simulation session on goniotomy using artificial eye model at the 2019 Canadian Ophthalmology Society annual meeting.  A 17-question survey assessed the face and content validity of the model.  Responses to each survey question were recorded on a 5-point Likert-type scale ranging from (1) strongly agree to (5) strongly disagree.  Mann-Whitney U nonparametric analysis was performed to determine whether prior experience performing KDB goniotomies on live patients or being a course instructor had significant influence on responses compared to those who had never performed KDB goniotomies or who were not course instructors.

Results: Respondents rated statements regarding the model with a median response of 1 (Strongly Agree) to 3 (Neither agree or disagree).  Mann-Whitney U nonparametric analysis revealed no significant difference in responses observed between instructor vs. non-instructor or between prior experience vs. no prior experience for any of the survey statements.  The model received the highest survey ratings for utility in training residents, acquisition of skills for novice users, increased accessibility compared to human cadaveric eyes, and higher likelihood of success with the procedure than theory and observation alone.  Lowest ratings were for realism of the model compared to a human cadaveric eye.

Conclusion: Regardless of prior goniotomy experience, the model was regarded highly overall by the respondents.  The realism of the model compared to a human cadaveric eye received the lowest score in the survey.  In the future, additional studies to assess the face and content validity this model are warranted as this study had a small sample size.

Face and content validity of an artificial eye model for dual blade goniotomy

[Poster Abstract Booklet](https://drive.google.com/file/d/1AGitRGyG9W0FiZ2Xjz6RNO2h7C0XglOL/view)

[Surgical Video Abstract Booklet](https://drive.google.com/file/d/1B-IkojrZhXk4AgXzsEQyuE_FwPG1Lvpe/view?usp=sharing)

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