Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Construct validity testing of a low cost vitreoretinal surgical simulator
Objective: To test the construct validity of a low cost, low fidelity vitreoretinal surgical simulator Design: Construct validity study. Six microsurgical dexterity tasks, performed on a low cost vitreoretinal surgical simulator, were graded using a scoring rubric designed to assess microsurgical de...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Division of Ophthalmology
2021
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613292475711488 |
|---|---|
| access_status_str | Open Access |
| author | van Der Westhuizen, Dean |
| author2 | Rice, James |
| author_browse | Rice, James van Der Westhuizen, Dean |
| author_facet | Rice, James van Der Westhuizen, Dean |
| author_sort | van Der Westhuizen, Dean |
| collection | Thesis |
| description | Objective: To test the construct validity of a low cost, low fidelity vitreoretinal surgical simulator Design: Construct validity study. Six microsurgical dexterity tasks, performed on a low cost vitreoretinal surgical simulator, were graded using a scoring rubric designed to assess microsurgical dexterity. Tasks one and two were dominant hand exercises, tasks three-five required bimanual dexterity and task six assessed visualization through a retinal viewing system The scores of a novice group (Ophthalmology residents who had never performed a pars planar vitrectomy) were compared to an expert group (Vitreoretinal surgeons who had performed in excess of 20 pars planar vitrectomies). Scores were graded via video recordings of the tasks, by blinded independent graders using a scoring rubric. Participants: The novice group of surgeons included 8 ophthalmology residents training at the Groote Schuur hospital department of Ophthalmology. The expert group of surgeons included 5 vitreoretinal surgeons working at the Groote Schuur hospital department of Ophthalmology, and 2 vitreoretinal surgeons working in the private sector in Cape Town, South Africa. Results: Expert surgeons performed significantly better( P=< 0.05) than the novice surgeons across all six microsurgical dexterity tasks. Greater differences were seen in bimanual tasks(tasks three-five) and in task six that was designed specifically to assess the surgeon's ability to ensure good visualisation through a retinal viewing system. Conclusions: The microsurgical dexterity tasks performed on This low cost, low-fidelity vitreoretinal surgical simulator can distinguish between novice and expert retinal surgeons demonstrating significant construct validity. Its use can be encouraged in the training of novice vitreoretinal surgeons. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/33090 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:49.949Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Division of Ophthalmology |
| publisherStr | Division of Ophthalmology |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/33090 Construct validity testing of a low cost vitreoretinal surgical simulator van Der Westhuizen, Dean Rice, James Education Ophthalmology Simulation Training Vitreoretinal Validity Objective: To test the construct validity of a low cost, low fidelity vitreoretinal surgical simulator Design: Construct validity study. Six microsurgical dexterity tasks, performed on a low cost vitreoretinal surgical simulator, were graded using a scoring rubric designed to assess microsurgical dexterity. Tasks one and two were dominant hand exercises, tasks three-five required bimanual dexterity and task six assessed visualization through a retinal viewing system The scores of a novice group (Ophthalmology residents who had never performed a pars planar vitrectomy) were compared to an expert group (Vitreoretinal surgeons who had performed in excess of 20 pars planar vitrectomies). Scores were graded via video recordings of the tasks, by blinded independent graders using a scoring rubric. Participants: The novice group of surgeons included 8 ophthalmology residents training at the Groote Schuur hospital department of Ophthalmology. The expert group of surgeons included 5 vitreoretinal surgeons working at the Groote Schuur hospital department of Ophthalmology, and 2 vitreoretinal surgeons working in the private sector in Cape Town, South Africa. Results: Expert surgeons performed significantly better( P=< 0.05) than the novice surgeons across all six microsurgical dexterity tasks. Greater differences were seen in bimanual tasks(tasks three-five) and in task six that was designed specifically to assess the surgeon's ability to ensure good visualisation through a retinal viewing system. Conclusions: The microsurgical dexterity tasks performed on This low cost, low-fidelity vitreoretinal surgical simulator can distinguish between novice and expert retinal surgeons demonstrating significant construct validity. Its use can be encouraged in the training of novice vitreoretinal surgeons. 2021-03-03T06:19:46Z 2021-03-03T06:19:46Z 2020 2021-03-02T14:59:40Z Master Thesis Masters MMed http://hdl.handle.net/11427/33090 eng application/pdf Division of Ophthalmology Faculty of Health Sciences |
| spellingShingle | Education Ophthalmology Simulation Training Vitreoretinal Validity van Der Westhuizen, Dean Construct validity testing of a low cost vitreoretinal surgical simulator |
| thesis_degree_str | Master's |
| title | Construct validity testing of a low cost vitreoretinal surgical simulator |
| title_full | Construct validity testing of a low cost vitreoretinal surgical simulator |
| title_fullStr | Construct validity testing of a low cost vitreoretinal surgical simulator |
| title_full_unstemmed | Construct validity testing of a low cost vitreoretinal surgical simulator |
| title_short | Construct validity testing of a low cost vitreoretinal surgical simulator |
| title_sort | construct validity testing of a low cost vitreoretinal surgical simulator |
| topic | Education Ophthalmology Simulation Training Vitreoretinal Validity |
| url | http://hdl.handle.net/11427/33090 |
| work_keys_str_mv | AT vanderwesthuizendean constructvaliditytestingofalowcostvitreoretinalsurgicalsimulator |