Efficacy of a Gas Permeable Contact Lens to Induce Peripheral Myopic Defocus

Abstract

Custom-designed RGP contact lenses can generate a significant degree of relative peripheral myopia in myopic patients regardless of their baseline spherical equivalent refractive error.

Astigmatic Peripheral Defocus with Different Contact Lenses: Review and Meta-Analysis

“…The results of those studies, comprising a total of 137 eyes, are published in previous works (see Table 2). 24,28,[40][41][42] However, the information provided here has not previously been reported.…”

“…A total of eight different contact lens types tested in 137 subjects resulted in 236 peripheral refraction measures. Those included orthokeratology 24 (n = 28), standard aspheric rigid gaspermeable (RGP, n = 52), 41 experimental RGP (n = 52) 41 , and experimental soft CL (n = 10) 40 to facilitate induction of peripheral myopic defocus, concentric MFCL (Oasys, n = 19), 42 aspheric center-distance silicone hydrogel soft MFCL with Add: +2.00 D (Biofinity multifocal D, n = 19) 42 and aspheric center-distance MFCL with add: +2.00 D (Proclear Multifocal D, n = 28) 28 , and +3.00 D (Proclear multifocal D, n = 28). 28 Table 2 summarizes the characteristics of all the contact lenses involved in the experiments reported.…”

Optical and pharmacological strategies of myopia control

“…The visual experience in the peripheral visual field plays a critical role in the regulation of ocular growth or refractive error development and peripheral myopic defocus has been proposed to counteract the stimulus for axial elongation . Consequently, this has sparked the interest of researchers and industry, resulting in the development of various novel multifocal spectacles and contact lenses with the aim of manipulating the retinal defocus experience for myopia control …”

Clinical evaluation of the Shin‐Nippon SRW‐5000 autorefractor in adults: an update

“…Measurement of refractive error at points away from the visual axis are of great importance in myopia control research, and in more basic understanding of the link between eye shape and peripheral refraction . Current work in myopia control has highlighted the potential impact of the position of the peripheral image shell in relation to the retina on myopia progression . A number of methods have been shown to reduce the rate of myopia progression, including multifocal contact lenses and orthokeratology .…”

“…30 Current work in myopia control has highlighted the potential impact of the position of the peripheral image shell in relation to the retina on myopia progression. 31,32 A number of methods have been shown to reduce the rate of myopia progression, including multifocal contact lenses 33 and orthokeratology. 34 A common theme in these methods is the placing of the peripheral image in front of (i.e.…”