title: Feasibility of Spectral Domain Optical Coherence Tomography Acquisition Using a Handheld Versus Conventional Tabletop Unit.
abstract: OBJECTIVE
  Patients afflicted with ocular complications of diabetes represent a diverse demographic who often cannot undergo spectral-domain optical coherence tomography (SD-OCT) imaging of the retina due to postural restraints. Our pilot study compared imaging acquisition methods using SD-OCT in the handheld (HH) mode versus the conventional tabletop (TT) method.
  
  
  METHODS
  Our study included 22 undilated eyes of 22 subjects (mean ± SD age, 35.8 ± 16.8 years) imaged using HH and TT iVue SD-OCT (Optovue, Fremont, CA). Statistical analysis was performed using Microsoft Excel 12.2.7 (Microsoft Corporation, Redmond, WA) software with an accepted significance of P < .05.
  
  
  RESULTS
  Strong intraclass correlation coefficient was observed for (1) overall (.97), superior (.93), and inferior (.94) ganglion cell complex thickness, and (2) central (.98), inferior (.90), superior (.92), nasal (.94), and temporal (.93) macular retinal thickness. Mean scan quality index was adequate but lower in HH versus TT SD-OCT (62.8 vs 68.1, respectively; P < .0001). Multiple attempts for adequate imaging were required more frequently in HH versus TT SD-OCT (34% vs 5%, respectively; P < .001).
  
  
  CONCLUSIONS
  HH SD-OCT may be a feasible alternative to TT SD-OCT in select situations, especially in patients suffering from diabetic complications with limited mobility.
authors.affiliation: Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, Newark, NJ, USA.
authors.forename: Nicole
authors.initials: N
authors.lastname: Mendez
authors.affiliation: Department of Ophthalmology, New York Eye and Ear Infirmary of Mount Sinai, NY, USA.
authors.forename: Natasha V
authors.initials: NV
authors.lastname: Nayak
authors.affiliation: Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
authors.forename: Anton M
authors.initials: AM
authors.lastname: Kolomeyer
authors.affiliation: Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, Newark, NJ, USA.
authors.forename: Ben C
authors.initials: BC
authors.lastname: Szirth
authors.affiliation: Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, Newark, NJ, USA khourias@njms.rutgers.edu.
authors.forename: Albert S
authors.initials: AS
authors.lastname: Khouri
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D003930:Diabetic Retinopathy / Q000175:diagnosis*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D041623:Tomography, Optical Coherence / Q000295:instrumentation*
keywords: diabetes; imaging methods; macula/fovea; optical coherence tomography