Change in over-refraction after scleral lens settling on average corneas

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
Chelsea BrayLuigina Sorbara

Abstract

The purpose of this study was to determine the change in over-refraction, if any, after a scleral lens settled on the eye for 6-8 h. Sixteen patients of varying refractive errors and normal corneal curvatures (measured with Pentacam(™) Oculus) were fitted with trial Mini-Scleral Design (MSD) scleral lenses (15.8 mm diameter) in one eye. The sagittal depths of the scleral lenses were selected by adding 350 μm to the corneal sagittal heights measured at a chord length of 15 mm with the Visante(™) optical coherence tomographer (OCT) anterior segment scans and picking the closest available trial lens in the set. Initial measurements were taken 30 min after lens insertion and included an auto-refraction, subjective refraction, and best sphere refraction over the contact lens. Visual acuities and Visante(™) OCT anterior segment scans were also taken. These measurements were repeated after 6-8 h of lens wear. Over the trial wearing period, the average change in the spherical component of the over-refraction was +0.06 D (S.D. 0.17) (p = 0.16). The average change in cylinder was +0.04 D (S.D. 0.19) (p = 0.33). The average absolute change in axis was 1.06° (S.D. 12.11) (p = 0.74). The average change in best sphere was +0.13 ± 0.30 D (p =...Continue Reading

References

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Dec 24, 2014·Eye & Contact Lens·Muriel M Schornack

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Citations

Aug 1, 2018·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Stephen J VincentMichael J Collins
Nov 20, 2018·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Alejandra ConsejoJos J Rozema
Oct 26, 2018·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Benjamin Thompson
Jul 25, 2020·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Alejandra ConsejoStephen J Vincent
Mar 6, 2019·BioMed Research International·Rute J Macedo-de-AraújoJosé M González-Méijome
Nov 15, 2019·Eye & Contact Lens·Stephen J VincentMichael J Collins

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