Peripheral refraction in myopia corrected with spectacles versus contact lenses

Citation information: Backhouse S, Fox S, Ibrahim B & Phillips JR. Peripheral refraction in myopia corrected with spectacles versus contact lenses. Ophthalmic Physiol Opt 2012, 32, 294–303. doi: 10.1111/j.1475-1313.2012.00912.x Abstract Purpose: Previous studies suggest that the refractive status of the peripheral retina can influence the development and progression of myopia. Our aim was to compare peripheral refractions in the same cohort of human eyes corrected with spectacle lenses vs soft contact lenses. Methods: Ten young adults with moderate to high myopia (−5.00 D to −8.00 D) were investigated. Open-field autorefraction was used to measure on- and off-axis refractions with the eyes in primary gaze, when uncorrected, and when corrected with spectacles and contact lenses. Measures were made every 5° out to 30° horizontally in nasal and temporal retina and analysed as power vectors (M, J0, and J45). Partial coherence interferometry measures of eye size were also made on-axis and off-axis at 10o and 20o in nasal and temporal retina. Results: Subjects (mean age 24; range 19–29 years) had an average on-axis mean-sphere refraction of −6.33 ± 0.31 D (mean ± 1 S.E.) and an average axial eye length of 25.99 ± 0.20 mm. The average relative peripheral refraction (RPR) for all subjects across all eccentricities was hyperopic when uncorrected (+0.90 ± 0.14 D) and also when corrected with spectacles (+1.01 ± 0.13 D) but changed to a myopic RPR when corrected with contact lenses (−1.84 ± 0.61 D). There was a highly significant effect of correction on peripheral refraction (p