Comparison of an open view autorefractor with an open view aberrometer in determining peripheral refraction in children

Pelsin Demir; Antonio Filipe Macedo; Ranjay Chakraborty; Karthikeyan Baskaran

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Comparison of an open view autorefractor with an open view aberrometer in determining peripheral refraction in children

Pelsin Demir ^[1] ; Antonio Filipe Macedo ^[1] ^[2] ; Ranjay Chakraborty ^[3] ^[3] ; Karthikeyan Baskarana ^[1]
1. [1] Linnaeus University
  
  Linnaeus University
  
  Suecia
2. [2] Universidade do Minho
  
  Universidade do Minho
  
  Braga (São José de São Lázaro), Portugal
3. [3] Flinders University
  
  Flinders University
  
  Australia
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Localización: Journal of Optometry: peer-reviewed Journal of the Spanish General Council of Optometry, ISSN-e 1888-4296, Vol. 16, Nº. 1, 2023, págs. 20-29
Idioma: inglés
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Resumen
- Purpose The aim of this study was to compare central and peripheral refraction using an open view Shin-Nippon NVision-K 5001 autorefractor and an open view COAS-HD VR aberrometer in young children.
  
  Methods Cycloplegic central and peripheral autorefraction was measured in the right eye of 123 children aged 8 to 16 years. Three measurements each were obtained with both Shin-Nippon NVision-K 5001 autorefractor and COAS-HD VR aberrometer along the horizontal visual field up to 30° (nasal and temporal) in 10° steps. The refraction from the autorefractor was compared with aberrometer refraction for pupil analysis diameters of 2.5-mm and 5.0-mm.
  
  Results The Shin-Nippon was 0.30 D more hyperopic than COAS-HD VR at 2.5-mm pupil and 0.50 D more hyperopic than COAS-HD VR at 5-mm pupil for central refraction. For both pupil sizes, the 95% limits of agreement were approximately 0.50 D for central refraction, and limits were wider in the nasal visual field compared to the temporal visual field. The mean difference for both J0 and J45 were within 0.15 D and the 95% limits of agreement within 0.90 D across the horizontal visual field.
  
  Conclusion Defocus components were similar between the Shin-Nippon autorefractor and the COAS-HD VR aberrometer with a 2.5-mm pupil for most visual field angles. However, there was a significant difference in defocus component between the Shin-Nippon autorefractor and the COAS-HD VR aberrometer with a 5.0-mm pupil, wherein the autorefractor measured more hyperopia. The astigmatic components J0 and J45 were similar between instruments for both central and peripheral refraction.