Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2016 Nov 22:5:2742.
doi: 10.12688/f1000research.9971.1. eCollection 2016.

Peripheral refraction with different designs of progressive soft contact lenses in myopes

Kareem Allinjawi  1 , Sharanjeet-Kaur Sharanjeet-Kaur  1 , Saadah Mohamed Akhir  1 , Haliza Abdul Mutalib  1
Affiliations

Peripheral refraction with different designs of progressive soft contact lenses in myopes

Kareem Allinjawi et al. F1000Res. .

Abstract

Aim: The purpose of this study was to compare the changes in relative peripheral refractive error produced by two different designs of progressive soft contact lenses in myopic schoolchildren. Methods: Twenty-seven myopic schoolchildren age between 13 to 15 years were included in this study. The measurements of central and peripheral refraction were made using a Grand-Seiko WR-5100K open-field autorefractometer without correction (baseline), and two different designs of progressive contact lenses (PCLs) (Multistage from SEED & Proclear from Cooper Vision) with an addition power of +1.50 D. Refractive power was measured at center and at eccentricities between 35º temporal to 35º nasal visual field (in 5º steps). Results: Both PCLs showed a reduction in hyperopic defocus at periphery. However, this reduction was only significant for the Multistage PCL (p= 0.015), (Proclear PCL p= 0.830). Conclusion: Multistage PCLs showed greater reduction in peripheral retinal hyperopic defocus among myopic schoolchildren in comparison to Proclear PCLs.

Keywords: Progressive contact lens; hyperopic defocus; myopia; peripheral retina.

PubMed Disclaimer

Conflict of interest statement

No competing interests were disclosed.

Figures

Figure 1.
Figure 1.. Baseline, Multistage PCL, and Proclear PCL of relative peripheral refractive error for mean spherical equivalent values ( M) at different eccentricities in the temporal (T) and nasal (N) visual fields.
Figure 2.
Figure 2.. Baseline, Multistage PCL, and Proclear PCL of relative peripheral refractive error for horizontal astigmatism component values ( J 0) at different eccentricities in the temporal (T) and nasal (N) visual fields.
Figure 3.
Figure 3.. Baseline, Multistage PCL, and Proclear PCL of relative peripheral refractive error for oblique astigmatism component values ( J 45) at different eccentricities in the temporal (T) and nasal (N) visual fields.
Figure 4.
Figure 4.
Progressive contact lens design ( a) Proclear progressive contact lens from Coopervision ( b) Multistage progressive contact lens from Seed.
See this image and copyright information in PMC

References

    1. Pan CW, Ramamurthy D, Saw SM: Worldwide prevalence and risk factors for myopia. Ophthalmic Physiol Opt. 2012;32(1):3–16. 10.1111/j.1475-1313.2011.00884.x - DOI - PubMed
    1. Atchison DA, Pritchard N, Schmid KL: Peripheral refraction along the horizontal and vertical visual fields in myopia. Vision Res. 2006;46(8–9):1450–1458. 10.1016/j.visres.2005.10.023 - DOI - PubMed
    1. Mutti DO, Hayes JR, Mitchell GL, et al. : Refractive error, axial length, and relative peripheral refractive error before and after the onset of myopia. Invest Ophthalmol Vis Sci. 2007;48(6):2510–19. 10.1167/iovs.06-0562 - DOI - PMC - PubMed
    1. Smith EL, 3rd, Kee CS, Ramamirtham R, et al. : Peripheral vision can influence eye growth and refractive development in infant monkeys. Invest Ophthalmol Vis Sci. 2005;46(11):3965–3972. 10.1167/iovs.05-0445 - DOI - PMC - PubMed
    1. Smith EL, 3rd, Ramamirtham R, Qiao-Grider Y, et al. : Effects of foveal ablation on emmetropization and form-deprivation myopia. Invest Ophthalmol Vis Sci. 2007;48(9):3914–3922. 10.1167/iovs.06-1264 - DOI - PMC - PubMed