title: Determination of feasibility and utility of microscope-integrated optical coherence tomography during ophthalmic surgery: the DISCOVER Study RESCAN Results.
abstract: OBJECTIVE
  Optical coherence tomography (OCT) has transformed the clinical management of a myriad of ophthalmic conditions. Applying OCT to ophthalmic surgery may have implications for surgical decision making and patient outcomes.
  
  
  OBJECTIVE
  To assess the feasibility and effect on surgical decision making of a microscope-integrated intraoperative OCT (iOCT) system.
  
  
  METHODS
  Report highlighting the 1-year results (March 2014-February 2015) of the RESCAN 700 portion of the DISCOVER (Determination of Feasibility of Intraoperative Spectral Domain Microscope Combined/Integrated OCT Visualization During En Face Retinal and Ophthalmic Surgery) study, a single-site, multisurgeon, prospective consecutive case series regarding this investigational device. Participants included patients undergoing ophthalmic surgery. Data on clinical characteristics were collected, and iOCT was performed during surgical milestones, as directed by the operating surgeon. A surgeon questionnaire was issued to each surgeon and was completed after each case to evaluate the role of iOCT during surgery and its particular role in select surgical procedures.
  
  
  METHODS
  Percentage of cases with successful acquisition of iOCT (ie, feasibility). Percentage of cases in which iOCT altered surgical decision making (ie, utility).
  
  
  RESULTS
  During year 1 of the DISCOVER study, a total of 227 eyes (91 anterior segment cases and 136 posterior segment cases) underwent imaging with the RESCAN 700 system. Successful imaging (eg, the ability to acquire an OCT image of the tissue of interest) was obtained for 224 of 227 eyes (99% [95% CI, 98%-100%]). During lamellar keratoplasty, the iOCT data provided information that altered the surgeon's decision making in 38% of the cases (eg, complete graft apposition when the surgeon believed there was interface fluid). In membrane peeling procedures, iOCT information was discordant with the surgeon's impression of membrane peel completeness in 19% of cases (eg, lack of residual membrane or presence of occult membrane), thus affecting additional surgical maneuvers.
  
  
  CONCLUSIONS
  The DISCOVER study demonstrates the feasibility of real-time iOCT with a microscope-integrated iOCT system for ophthalmic surgery. The information gained from iOCT appears to allow surgeons to assess subtle details in a unique perspective from standard en face visualization, which can affect surgical decision making some of the time, although the effect of these changes in decision making on outcomes remains unknown. A prospective randomized masked trial is needed to confirm these results.
authors.affiliation: Ophthalmic Imaging Center, Cleveland, Ohio.
authors.forename: Justis P
authors.initials: JP
authors.lastname: Ehlers
authors.affiliation: Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Jeff
authors.initials: J
authors.lastname: Goshe
authors.affiliation: Ophthalmic Imaging Center, Cleveland, Ohio.
authors.forename: William J
authors.initials: WJ
authors.lastname: Dupps
authors.affiliation: Ophthalmic Imaging Center, Cleveland, Ohio.
authors.forename: Peter K
authors.initials: PK
authors.lastname: Kaiser
authors.affiliation: Ophthalmic Imaging Center, Cleveland, Ohio.
authors.forename: Rishi P
authors.initials: RP
authors.lastname: Singh
authors.affiliation: Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Richard
authors.initials: R
authors.lastname: Gans
authors.affiliation: Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Eisengart
authors.affiliation: Ophthalmic Imaging Center, Cleveland, Ohio.
authors.forename: Sunil K
authors.initials: SK
authors.lastname: Srivastava
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003199:Computer Systems; D016039:Corneal Transplantation; D003657:Decision Making; D057111:Descemet Stripping Endothelial Keratoplasty; D003930:Diabetic Retinopathy / Q000601:surgery; D019773:Epiretinal Membrane / Q000601:surgery; D006804:Ergonomics; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008853:Microscopy / Q000295:instrumentation*; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D013508:Ophthalmologic Surgical Procedures / Q000295:instrumentation; D011446:Prospective Studies; D012163:Retinal Detachment / Q000601:surgery; D025321:Surgery, Computer-Assisted / Q000379:methods*; D041623:Tomography, Optical Coherence / Q000295:instrumentation*; D014821:Vitrectomy; D055815:Young Adult