June 2023
Volume 64, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2023
Results from a construct validity study: Does real-life experience in cataract surgery translate into performance on a surgical simulator?
Author Affiliations & Notes
  • Akshay Nair
    Ophthalmic Plastics and Ocular Oncology, Aditya Jyot Eye Hospital Pvt Ltd, Mumbai, Maharashtra, India
    HelpMeSee Inc., India
  • Van Charles Lansingh
    Instituto Mexicano Oftalmología, Queretaro, Mexico
  • Ashish Bacchav
    HelpMeSee Inc., India
  • Chetan Ahiwalay
    HelpMeSee Inc., India
  • Footnotes
    Commercial Relationships   Akshay Nair HelpMeSee Inc., Code C (Consultant/Contractor); Van Charles Lansingh HelpMeSee Inc., Code C (Consultant/Contractor); Ashish Bacchav HelpMeSee Inc., Code C (Consultant/Contractor); Chetan Ahiwalay HelpMeSee Inc., Code C (Consultant/Contractor)
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2023, Vol.64, 1213. doi:
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      Akshay Nair, Van Charles Lansingh, Ashish Bacchav, Chetan Ahiwalay; Results from a construct validity study: Does real-life experience in cataract surgery translate into performance on a surgical simulator?. Invest. Ophthalmol. Vis. Sci. 2023;64(8):1213.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose : To compare the performance of novice ophthalmology residents and expert cataract surgeons while using the capsulorrhexis module on a high-fidelity, virtual-reality based simulator.

Methods : In this prospective comparative study, ophthalmology residents and expert cataract surgeons (>500 prior cataract surgeries) were asked to perform capsulorrhexis on the HelpMeSee Eye Surgery simulator. None of the participants had any prior experience on the simulator. After the initial acclimatisation attempts, each participant was allowed to perform four attempt each. The parameters measured were:
a. Time taken per attempt
b. The number of completed capsulorrhexis
c. The score for each attempt as scored by the simulator
e. The number of errors as recorded by the simulator (cystotome touching the iris and/or the endothelium during the capsulorrhexis)

Results : The mean duration taken for a complete capsulorrhexis was significantly higher for the novices as compared to the experts (228.8 seconds vs. 152.1 seconds; p<0.003). Expert cataract surgeons were able to create a complete capsulorrhexis in a significantly higher proportion of attempts as compared to the novices (88.9% vs. 65.6%; p=0.02). Expert surgeons achieved significantly higher scores (3.84 vs. 1.69; p=0.001) as rated by the simulator and expert surgeons also performed fewer errors per attempt (1.81 vs. 1.09; p=0.25), although this difference was not statistically significant.

Conclusions : Expert cataract surgeons took significantly lesser mean time per capsulorrhexis attempt; and performed fewer mean errors per attempt as compared to novice ophthalmologists. Additionally, expert surgeons received a higher mean score than novice surgeons. The study shows that performance on the HelpMeSee Eye surgery simulator correlates with real-life surgical experience. The HelpMeSee Eye Surgery simulator demonstrates construct validity for capsulorrhexis assignment.

This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.


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