title: Surgical video recording with a modified GoPro Hero 4 camera.
abstract: BACKGROUND
  Surgical videography can provide analytical self-examination for the surgeon, teaching opportunities for trainees, and allow for surgical case presentations. This study examined if a modified GoPro Hero 4 camera with a 25 mm lens could prove to be a cost-effective method of surgical videography with enough detail for oculoplastic and strabismus surgery.
  
  
  METHODS
  The stock lens mount and lens were removed from a GoPro Hero 4 camera, and was refitted with a Peau Productions SuperMount and 25 mm lens. The modified GoPro Hero 4 camera was then fixed to an overhead surgical light.
  
  
  RESULTS
  Camera settings were set to 1080p video resolution. The 25 mm lens allowed for nine times the magnification as the GoPro stock lens. There was no noticeable video distortion. The entire cost was less than 600 USD.
  
  
  CONCLUSIONS
  The adapted GoPro Hero 4 with a 25 mm lens allows for high-definition, cost-effective, portable video capture of oculoplastic and strabismus surgery. The 25 mm lens allows for detailed videography that can enhance surgical teaching and self-examination.
authors.affiliation: Department of Ophthalmology and Vision Science, University of California, Davis Eye Center, Sacramento, CA, USA.
authors.forename: Lily Koo
authors.initials: LK
authors.lastname: Lin
keywords: oculoplastic; strabismus; teaching
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