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Cataract surgeons outperform medical students in Eyesi virtual reality cataract surgery: evidence for construct validity.

Selvander, Madeleine LU and Åsman, Peter LU (2013) In Acta Ophthalmologica 91(5). p.469-474
Abstract
Purpose:

To investigate construct validity for modules hydromaneuvers and phaco on the Eyesi surgical simulator.



Methods:

Seven cataract surgeons and 17 medical students performed capsulorhexis, hydromaneuvers, phaco, navigation, forceps, cracking and chopping modules in a standardized manner. Three trials were performed on each module (two on phaco) in the above order. Performance parameters as calculated by the simulator for each trial were saved. Video recordings of the second trial of the modules capsulorhexis, hydromaneuvers and phaco were evaluated with the modified Objective Structured Assessment of Surgical Skill (OSATS) and Objective Structured Assessment of Cataract Surgical Skill (OSACSS)... (More)
Purpose:

To investigate construct validity for modules hydromaneuvers and phaco on the Eyesi surgical simulator.



Methods:

Seven cataract surgeons and 17 medical students performed capsulorhexis, hydromaneuvers, phaco, navigation, forceps, cracking and chopping modules in a standardized manner. Three trials were performed on each module (two on phaco) in the above order. Performance parameters as calculated by the simulator for each trial were saved. Video recordings of the second trial of the modules capsulorhexis, hydromaneuvers and phaco were evaluated with the modified Objective Structured Assessment of Surgical Skill (OSATS) and Objective Structured Assessment of Cataract Surgical Skill (OSACSS) tools.



Results:

Cataract surgeons outperformed medical students with regard to overall score on capsulorhexis (p < 0.001, p = 0.035, p = 0.010 for the tree iterations, respectively), navigation (p = 0.024, p = 0.307, p = 0.007), forceps (p = 0.017, p = 0.03, p = 0.028). Less obvious differences in overall score were found for modules cracking and chopping (p = 0.266, p = 0.022, p = 0.324) and phaco (p = 0.011, p = 0.081 for the two iterations, respectively). No differences in overall score were found on hydromaneuvers (p = 0.588, p = 0.503, p = 0.773), but surgeons received better scores from the evaluations of the modified OSATS (p = 0.001) and OSACSS (capsulorhexis, p = 0.003; hydromaneuvers, p = 0.017; phaco, p = 0.001).



Conclusions:

Construct validity was found on several modules previously not investigated (phaco, hydromaneuvers, cracking and chopping, navigation), and our results confirm previously demonstrated construct validity for capsulorhexis and forceps modules. Interestingly, validation of the hydromaneuvers module required OSACSS video evaluation tool. A further development of the scoring system in the simulator for the hydromaneuvers module would be advantageous and make training and evaluation of progress more accessible and immediate. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
SoTL
categories
Higher Education
in
Acta Ophthalmologica
volume
91
issue
5
pages
469 - 474
publisher
Wiley-Blackwell
external identifiers
  • wos:000321626000036
  • pmid:22676143
  • scopus:84880252585
ISSN
1755-3768
DOI
10.1111/j.1755-3768.2012.02440.x
language
English
LU publication?
yes
id
5cc0c874-67e0-49ba-9351-e6554638e49b (old id 2859688)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/22676143?dopt=Abstract
date added to LUP
2012-07-04 12:21:42
date last changed
2019-04-02 01:25:28
@article{5cc0c874-67e0-49ba-9351-e6554638e49b,
  abstract     = {Purpose: <br/><br>
To investigate construct validity for modules hydromaneuvers and phaco on the Eyesi surgical simulator. <br/><br>
<br/><br>
Methods: <br/><br>
Seven cataract surgeons and 17 medical students performed capsulorhexis, hydromaneuvers, phaco, navigation, forceps, cracking and chopping modules in a standardized manner. Three trials were performed on each module (two on phaco) in the above order. Performance parameters as calculated by the simulator for each trial were saved. Video recordings of the second trial of the modules capsulorhexis, hydromaneuvers and phaco were evaluated with the modified Objective Structured Assessment of Surgical Skill (OSATS) and Objective Structured Assessment of Cataract Surgical Skill (OSACSS) tools. <br/><br>
<br/><br>
Results: <br/><br>
Cataract surgeons outperformed medical students with regard to overall score on capsulorhexis (p &lt; 0.001, p = 0.035, p = 0.010 for the tree iterations, respectively), navigation (p = 0.024, p = 0.307, p = 0.007), forceps (p = 0.017, p = 0.03, p = 0.028). Less obvious differences in overall score were found for modules cracking and chopping (p = 0.266, p = 0.022, p = 0.324) and phaco (p = 0.011, p = 0.081 for the two iterations, respectively). No differences in overall score were found on hydromaneuvers (p = 0.588, p = 0.503, p = 0.773), but surgeons received better scores from the evaluations of the modified OSATS (p = 0.001) and OSACSS (capsulorhexis, p = 0.003; hydromaneuvers, p = 0.017; phaco, p = 0.001). <br/><br>
<br/><br>
Conclusions: <br/><br>
Construct validity was found on several modules previously not investigated (phaco, hydromaneuvers, cracking and chopping, navigation), and our results confirm previously demonstrated construct validity for capsulorhexis and forceps modules. Interestingly, validation of the hydromaneuvers module required OSACSS video evaluation tool. A further development of the scoring system in the simulator for the hydromaneuvers module would be advantageous and make training and evaluation of progress more accessible and immediate.},
  author       = {Selvander, Madeleine and Åsman, Peter},
  issn         = {1755-3768},
  keyword      = {SoTL},
  language     = {eng},
  number       = {5},
  pages        = {469--474},
  publisher    = {Wiley-Blackwell},
  series       = {Acta Ophthalmologica},
  title        = {Cataract surgeons outperform medical students in Eyesi virtual reality cataract surgery: evidence for construct validity.},
  url          = {http://dx.doi.org/10.1111/j.1755-3768.2012.02440.x},
  volume       = {91},
  year         = {2013},
}