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Comparison between refraction measured by Spot Vision Screening™ and subjective clinical refractometry
Daniela Lima de Jesus1, Flávio Fernandes Villela1, Luis Fernando Orlandin1
1Disciplina de Oftalmologia e Otorrinolaringologia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo/, SP, Brazil.
Clinics (Sao Paulo, Brazil)
|March 3, 2016
Summary
Spot Vision Screening™ offers a clinically non-relevant difference compared to subjective refractometry, supporting its use as an ancillary tool for vision screening in children and adults.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Accurate refractive error assessment is crucial for pediatric and adult eye care.
- Autorefractors provide objective measurements, but their accuracy against subjective refraction requires validation.
Purpose of the Study:
- To compare the accuracy of Spot Vision Screening™ autorefractor measurements with subjective clinical refractometry.
- To evaluate the clinical relevance of discrepancies between the two methods in a diverse age group.
Main Methods:
- 134 eyes of patients aged 7-50 years underwent both Spot Vision Screening™ and cycloplegic subjective refractometry.
- Refraction data were analyzed using magnitude vectors to assess differences.
Main Results:
- The mean difference in spherical equivalents was +0.66±0.56 D.
- Vector analysis showed minor differences: +0.16±0.27 D (90 axis) and +0.02±0.15 D (oblique vector).
Conclusions:
- While statistically significant, the observed differences between Spot Vision Screening™ and subjective refractometry are clinically non-relevant.
- Spot Vision Screening™ is a viable ancillary method for estimating refractive error in clinical settings.
