Peripheral Refraction in Myopic Eyes After LASIK Surgery

Queirós, António; Villa-Collar, César; Jorge, Jorge; Gutiérrez, Ángel Ramón; González-Meijóme, José Manuel

doi:10.1097/opx.0b013e31825ddf54

Cited by 12 publications

(12 citation statements)

References 38 publications

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“…We hypothesize that the relationship between the change in RPRE and baseline axial myopia is related with the changes operated in the anterior corneal surface for different degrees of myopia during orthokeratology treatment for myopia; similar behavior has been also described for corneal refractive surgery. 11,26,27 The amount of curvature change in the anterior corneal surface is intrinsically related with the amount of myopia to be corrected. Lower myopia requires a lower degree of corneal reshaping than higher myopia.…”

Section: Discussionmentioning

confidence: 99%

Changes in Peripheral Refractive Profile after Orthokeratology for Different Degrees of Myopia

González-Meijóme¹,

Faria‐Ribeiro²,

Lopes-Ferreira³

et al. 2015

Current Eye Research

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Section: Discussionmentioning

confidence: 99%

Changes in Peripheral Refractive Profile after Orthokeratology for Different Degrees of Myopia

González-Meijóme¹,

Faria‐Ribeiro²,

Lopes-Ferreira³

et al. 2015

Current Eye Research

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“…Laser-Assisted in Situ Keratomileusis (LASIK) allows to reduce the dependence on spectacles or contact lenses. Although LASIK is not applied with the purpose for regulating myopia, the peripheral refraction and peripheral image quality has been previously characterized along the horizontal meridian [ 17 – 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…It could be argued that the mechanisms that induce axial growth control later in life are not the same as in children where myopia control with optical methods has shown efficacy. Additionally, peripheral defocus induced by surgical reshaping treatments is weaker than that induced by orthokeratology [ 17 ]. In any case, we aim to describe in further detail the changes induced by both treatments when analyzed in a more comprehensive way compared with previous studies that evaluated only the horizontal meridian.…”

Section: Introductionmentioning

confidence: 99%

Relative peripheral refraction across 4 meridians after orthokeratology and LASIK surgery

et al. 2018

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BackgroundTo characterize the axial and off-axis refraction across four meridians of the retina in myopic eyes before and after Orthokeratology (OK) and LASIK surgery.MethodsSixty right eyes with a spherical equivalent (M) between − 0.75 to − 5.25 D (cylinder <− 1.00 D) underwent LASIK (n = 26) or OK (n = 34) to treat myopia. Axial and off-axis refraction were measured with an open-field autorefractometer before and after stabilized treatments. Off-axis measurements were obtained for the horizontal (35° nasal and temporal retina) and vertical (15° superior and inferior retina) meridians, and for two oblique directions (45–225° and 135–315°) up to 20° of eccentricity. The refractive profile was addressed as relative peripheral refractive error (RPRE).ResultsOK and LASIK post-treatment results showed an increase of myopic relative refraction at several eccentric locations. At the four meridians evaluated, the M component of the pre-treatment RPRE values was not statistically different (p > 0.05) from the post-treatment RPRE within 30° and 20° of the central visual field after LASIK and OK, respectively. These results demonstrated that the treatment zone warrants an optimal central field of vision.ConclusionsThe present study gives an overview of RPRE after refractive corneal reshaping treatments (OK and LASIK) across vertical, horizontal and two oblique meridians together. This allows a 3D representation of RPRE at the retina and shows that the myopic shift induced by both treatments is more relevant in horizontal directions.

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“…Fig. 2 shows the patterns of relative peripheral refractive error obtained with an open-field autorefractometer following the procedures previously published [22][23]. Data presented report the sagittal (F S ) and tangential (F T ) astigmatic focal lengths for each eye of each subject, before and after treatment [24][25].…”

Section: Case Reportsmentioning

confidence: 98%