Year: 2024
Type: article
Abstract: Purpose To introduce a novel methodology for subjective refraction based on power vectors with a conventional phoropter. Methods A conventional phoropter was used to measure power vector components of refraction ( M , J 0 and J 45 ) directly by using the sphere power (for M measurement) and the cylinder power combined with the Jackson cross‐cylinders (for J 0 and J 45 measurements). Conventional subjective refraction was also performed, and this result was mathematically transformed into power vector notation for comparison purposes. Visual acuities with the conventional prescription and the quasi‐vector‐based prescription were compared. Results Refractive error from 40 healthy participants was measured by conventional and quasi‐vector‐based subjective refraction. No differences were found between methods for any of the power vector components of refraction ( p > 0.21 in all cases). The visual acuity achieved with the prescriptions yielded similar values ( p = 0.85). Conclusions Subjective refraction can be measured directly in power vector notation using a conventional phoropter without any additional adaptation and computation.
DOI: 10.1111/opo.13400
Institution: Universitat de València
Language: English
Subfield: Epidemiology
Field: Medicine
Domain: Health Sciences
Open Access status: hybrid
Estimated APC paid: $4,050
OpenAlex ID: W4403215096