Studies with Plusoptix Binocular Autorefractor

• 2018
  A Comparison of Three Different Photoscreeners in Children
  
  Reference:
  Journal of Pediatric Ophthalmology and Strabismus [29 May 2018:1-6]
  Results:
  

  "The photorefractometer method was beneficial in the measurement of refractive errors of school-aged children. The PlusoptiX A12 photorefractometer method may eliminate the need for cycloplegia in the detection of refractive errors in children."

  [Comparison of the results obtained from three non-cycloplegic handheld photorefractometers (plusoptiX A12, Retinomax K-plus 3 and Spot) with cycloplegic autorefractometry (Topcon KR-8100) measurement in children.]

• 2016
  A comparison of plusoptiX A12 measurements with cycloplegic refraction
  
  Reference:
  AAPOS 2016, Volume 20, Issue 4, Pages 310–314
  Results:
  

  Mean patient age 7.63 ±3.41 years

  Mean difference of sphere:
  0.88 ± 1.5 (0.58 to 1.4) r=0.91

  Mean difference of cylinder:
  -0.61 ± 0.74 (95% CI -0.66 to 0.77) r=0.81

  Mean difference of axis:
  71.17 ± 71.04 (95% CI 77.3 to 68.9) r=0.7

  Sensitivity, specificity for myopia: 86%, 93%

  Sensitivity, specificity for astigmatism: 85%, 98%

  Sensitivity, specificity for hyperopia: 40%, 100%

• 2014
  Photoscreeners in the Eye Office: Compared Testability and Refractions on High-Risk Children
  
  Reference:
  Am J Ophthalmol 2014; article in press
  Results:
  

  Patient age 1 to 16 years (mean patient age 6.0 ±3.4 years)

  Mean difference of sphere:
  -0.64 ±0.08 (95% CI -0.82 to -0.46)

  Mean difference of cylinder:
  0.32 ±0.04 (95% CI 0.24 to 0.41)

  Mean difference of spherical equivalent:
  -0.47 ±0.07 (95% CI -0.64 to -0.30)

• 2012
  Screening for amblyopia risk factors in pre-verbal children using the Plusoptix photoscreener: a cross-sectionals population-based study
  
  Reference:
  Br J Ophthalmol 2012; 96:83-86
  Results:
  

  Patient age 6 to 36 months (mean patient age 16.95 ±8.59 months)

  Mean difference of sphere:
  +0.05 ±1.05D; p=0.43

  Mean difference of cylinder:
  -0.43 ±0.58D; P=0.01

  Mean difference of spherical equivalent:
  -0.16 ±1.0D; p=0.01

• 2011
  Detecting Small Angle Strabismus With The Plusoptix Photoscreener
  
  Reference:
  AAPOS 2011 Poster#042
  Results:
  

  Patient age 6 months to 18 years

  Mean difference of prism diopters:
  0.39 PD to near cover-test (95% CI -0.72 to +1.51; p=0.49)
  0,17 PD to distance cover-test (95% CI -1.17 to +0.82; p=0.73)

• 2010
  Screening for refractive errors in children: The plusoptiX S08 and the Retinomax K-plus2 performed by lay screener compared to cycloplegic retinoscopy
  
  Reference:
  J AAPOS 2010; 14:478-483
  Results:
  

  Patient age 3 months to 11 years (mean patient age 5.2 ±2.6 years)

  Mean difference of spherical equivalent:
  -1.13 ±1.25D (95% CI -3.59 to +1.32)

  Mean difference of cylinder:
  -0,23 ±0,53D (95% CI -1.28 to +0.81)