Binocular function changes produced in response to overnight orthokeratology

Felipe-Marquez, Gema; Nombela-Palomo, María; Palomo-Álvarez, Catalina; Cacho, Isabel; Nieto-Bona, Amelia

doi:10.1007/s00417-016-3554-0

Cited by 18 publications

(5 citation statements)

References 24 publications

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“…96,290 Multifocal contact lenses worn by children can induce exophoria, increasing with accommodative demand. 79 OK causes minimal effects on ocular alignment, 291 and a link between OK or pharmacological treatments for myopia control has not been reported. These results indicate some potential benefit of monitoring heterophoria either upon inclusion in a study or during the course of the study.…”

Section: Lag Of Accommodationmentioning

confidence: 99%

IMI – Clinical Myopia Control Trials and Instrumentation Report

Wolffsohn

Kollbaum

Berntsen

et al. 2019

Invest. Ophthalmol. Vis. Sci.

119

179

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The evidence-basis based on existing myopia control trials along with the supporting academic literature were reviewed; this informed recommendations on the outcomes suggested from clinical trials aimed at slowing myopia progression to show the effectiveness of treatments and the impact on patients. These outcomes were classified as primary (refractive error and/or axial length), secondary (patient reported outcomes and treatment compliance), and exploratory (peripheral refraction, accommodative changes, ocular alignment, pupil size, outdoor activity/ lighting levels, anterior and posterior segment imaging, and tissue biomechanics). The currently available instrumentation, which the literature has shown to best achieve the primary and secondary outcomes, was reviewed and critiqued. Issues relating to study design and patient selection were also identified. These findings and consensus from the International Myopia Institute members led to final recommendations to inform future instrumentation development and to guide clinical trial protocols.

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Section: Lag Of Accommodationmentioning

confidence: 99%

IMI – Clinical Myopia Control Trials and Instrumentation Report

Wolffsohn

Kollbaum

Berntsen

et al. 2019

Invest. Ophthalmol. Vis. Sci.

119

179

View full text Add to dashboard Cite

show abstract

“…However, for this study, this limitation should have no impact when comparing the response in different times of the treatment, and as mentioned in the Section 2, it is not expected that under the conditions of this experiment, the response would be significantly different. Despite the results presented by Felipe-Marquez et al [51], who showed that OK does not significantly change the binocular function for either short-or long-term periods, in a further investigation, it would be interesting to evaluate the accommodative response with the same method and with a larger sample size, subjects with different degrees of myopia, and a long-term group. Batres et al recently evaluated the changes in accommodative LAG using Nott retinoscopy and concluded that there was a reduction of about 0.25 D in accommodative lag from baseline [52].…”

Section: Discussionmentioning

confidence: 85%

The Impact of Overnight Orthokeratology on Accommodative Response in Myopic Subjects

Pereira-da-Mota

Costa

Amorim‐de‐Sousa

et al. 2020

JCM

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This study aimed to evaluate the effects of two months of orthokeratology (OK) treatment in the accommodative response of young adult myopes. Twenty eyes (21.8 ± 1.8 years) were fitted with the Paragon CRT® 100 LENS to treat myopia between −1.00 and −2.00 D. Low- and high-contrast visual acuity (LCDVA and HCDVA), central objective refraction, light disturbance (LD), and objective accommodative response (using the Grand Seiko WAM-5500 open-field autorefractometer coupled with a Badal system) were measured at baseline (BL) before lens wear and after 1, 15, 30, and 60 nights of OK. Refractive error correction was achieved during the first fifty days of OK lens wear, with minimal changes afterwards. LD analysis showed a transient increase followed by a reduction to baseline levels over the first 30 nights of treatment. The accommodative response was lower than expected for all target vergences in all visits (BL: 0.61 D at 1.00 D to 0.96 D at 5.00 D; 60 N: 0.36 D at 1.00 D to 0.79 D at 5.00 D). On average, the accommodative lag decreases over time with OK lens wear. However, these differences were not statistically significant (p > 0.050, repeated-measures ANOVA and Friedman test). This shows that overnight OK treatment does not affect objectively measured the accommodative response of young, low myopic eyes after two months of treatment stabilization.

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“…First, human neuroadaptation can compensate for optical alterations with time goes [ 27 – 30 ]. In addition, previous studies, which investigated lenses designed with peripheral myopic defocus, have evaluated binocular vision and accommodation at the baseline and found that fusional vergence [ 31 ], phoria [ 31 – 34 ], NPC [ 32 ], AA [ 31 , 35 ], AR [ 31 , 35 , 36 ], and AF [ 33 , 35 , 36 ] did not change with time. Based on these evidences, the long-term influence may keep consistent with that of short term if extending boldly.…”

Section: Discussionmentioning

confidence: 99%

Effect of Spectacle Lenses with Highly Aspherical Lenslets on Binocular Vision and Accommodation in Myopic Children with and without Intermittent Exotropia

Zhou

Huang

et al. 2022

Journal of Ophthalmology

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Purpose. To evaluate the influence of spectacle lenses with highly aspherical lenslets (HAL) on binocular vision and accommodation in myopic children with intermittent exotropia (IXT) and compare the changes after wearing HAL in binocular vision and accommodation in myopic children with or without IXT. Method. Forty myopic subjects aged 8–12 years were recruited: 20 with IXT and 20 visually normal children. Stereoacuity, phoria, accommodative facility, fusional vergence, vergence facility, near point of convergence, amplitude of accommodation, and accommodative response (AR) were measured by wearing HAL or single vision spectacle lenses (SVL) in a random order after adapting for 20 minutes. Accommodative microfluctuation (AMF) was defined as the standard deviation of AR. Changes in binocular vision and accommodation after wearing HAL were compared between the two groups. Results. No significant differences were found in binocular vision after wearing HAL versus SVL in either group (all P > 0.05 ). A greater AMF was found after wearing HAL than after wearing SVL in both groups (0.04 D, 95% confidence interval (CI), 0.03 to 0.05 D, P < 0.001 for the IXT group; 0.05 D, 95% CI, 0.03 to 0.07 D, P < 0.001 for the visually normal group); however, the other accommodation parameters did not change significantly (all P > 0.05 ). There were no differences in the changes after wearing HAL in any parameter between the two groups (all P > 0.05 ). Conclusion. HAL did not significantly change the binocular vision and accommodation for myopic children with or without IXT except for AMF in the short term.

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Binocular function changes produced in response to overnight orthokeratology

Abstract: OK induces minimal changes in the binocular function for either short-term or long-term periods, apart from a near exophoric trend over the short-term period.

Cited by 18 publications

References 24 publications

IMI – Clinical Myopia Control Trials and Instrumentation Report

IMI – Clinical Myopia Control Trials and Instrumentation Report

The Impact of Overnight Orthokeratology on Accommodative Response in Myopic Subjects

Effect of Spectacle Lenses with Highly Aspherical Lenslets on Binocular Vision and Accommodation in Myopic Children with and without Intermittent Exotropia

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