Central motion perception, as assessed by minimum displacement detection, was reduced by 25% in highly myopic eyes. Peripheral motion detection may be influenced by myopia, particularly in the inferior-nasal retina. Retinal stretching due to axial elongation may be linked to reduced performance in higher myopes.

Taiwan is commonly noted for its high prevalence of myopia, as well as a long history of more than 20 years of using atropine to control myopia. However, the clinical implications are rarely discussed. This is a cross-sectional study investigating the influence of topical atropine instillation on ocular physiology, visual function, and visual discomfort in children. Aged 7 to 12 years, 212 schoolchildren were recruited and divided into the atropine group and the non-atropine group. Physiological characteristics such as pupil size and intraocular pressure were measured, and a variety of visual functions was also evaluated. A questionnaire was used to investigate the side effects and visual complaints caused by atropine treatment. There was a significant difference in pupil size (OD: 5.40 ± 0.90 vs. 6.60 ± 1.01 mm; OS: 5.42 ± 0.87 vs. 6.64 ± 1.00 mm, p < 0.001) between the two groups. Reductions in near visual acuity, accommodation, convergence ability, and stereopsis were observed in the atropine group. The horizontal pupil diameter enlarged, and visual functions were greatly affected after administration of topical atropine. The changes in visual function during atropine therapy need to be carefully monitored by clinicians, while patient compliance is usually the key to success.

Purpose. To compare the patterns of relative peripheral refractions of myopic children who were currently on atropine treatment for myopia control and myopic children who did not use atropine. Methods. Chinese children (n = 209) aged 7 to 12 years participated in the study, 106 used atropine and 103 did not. Participants were also classified into three groups: emmetropes (SE: +0.50 to −0.50 D), low myopes (SE: −0.50 to −3.00 D), and moderate myopes (SE: −3.00 to −6.00 D). The central and peripheral refractions along the horizontal meridians (for both nasal and temporal fields) were measured in 10-degree steps to 30 degrees. Results. There were no statistically significant differences in spherical equivalent and astigmatism of the three refractive groups in either the nasal or temporal retina. The atropine group showed a significant relative myopia in the temporal 30° field in spherical equivalent compared to the emmetropic group (t49 = 3.36, P=0.02). In eyes with low myopia, the atropine group had significant relative myopia in the nasal 30° and temporal 30° fields (t118 = 2.59, P=0.01; t118 = 2.06, P=0.04), and it is also observed at 20° and 30° of the nasal field for the moderate myopic group (t36 = 2.37, P=0.02; t2.84 = 2.84, P=0.01). Conclusion. Significant differences in relative peripheral refraction were found between the atropine group and its controls. The findings suggested that the eyes that received atropine may have a less prolate shape and thus explain why using atropine is effective in controlling myopia progression.

Myopes were more affected than emmetropes by masking stimuli for the location task. This was not affected by magnitude or progression rate of myopia, suggesting that myopes have the propensity for poor performance in locating briefly presented low contrast objects at an early stage of myopia development.

Table of contentsO1 Changes in peripheral refraction associated with decreased ocular axial growth rate in marmosetsAlexandra Benavente-Perez, Ann Nour, Tobin Ansel, Kathleen Abarr, Luying Yan, Keisha Roden, David TroiloO2 PPARα activation suppresses myopia development by increasing scleral collagen synthesis--a new drug target to suppress myopia developmentChanyi Lu, Miaozhen Pan, Min Zheng, Jia Qu, Xiangtian ZhouO3 Evidence and possibilities for local ocular growth regulating signal pathwaysChristine F WildsoetO4 Myopia researches at Eye Hospital of Wenzhou Medical UniversityFan Lu, Xiangtian Zhou, Jie Chen, Jinhua Bao, Liang Hu, Qinmei Wang, Zibing Jin, Jia QuO5 Color, temporal contrast and myopiaFrances Rucker, Stephanie Britton, Stephan Hanowsky, Molly SpatcherO6 The impact of atropine usage on visual function and reading performance in myopic school children in TaiwanHui-Ying Kuo, Ching-Hsiu Ke, I-Hsin Kuo, Chien-Chun Peng, Han-Yin SunO7 Increased time outdoors prevents the onset of myopia: evidence from randomised clinical trialsIan G MorganO8 Environmental risk factors and gene-environment interactions for myopia in the ALSPAC cohortJeremy A. Guggenheim, Rupal L. Shah, Cathy WilliamsO9 Retinal metabolic profiling identifies declines in FP receptor-linked signaling as contributors to form-deprived myopic development in guinea pigsJinglei Yang, Peter S. Reinach, Sen Zhang, Miaozhen Pan, Wenfeng Sun, Bo Liu, Xiangtian ZhouO10 The study of peripheral refraction in moderate and high myopes after one month of wearing orthokeratology lensJun Jiang, Haoran Wu, Fan LuO11 Axial length of school children around the earth’s equatorial area and factors affecting the axial lengthKazuo Tsubota, Hiroko Ozawa, Hidemasa Torii, Shigemasa Takamizawa, Toshihide Kurihara, Kazuno NegishiO12 Processing of defocus in the chicken retina by retinal ganglion cellsKlaus Graef, Daniel Rathbun, Frank SchaeffelO13 Blue SAD light protects against form deprivation myopia in chickens, by local signaling within the retinaLadan Ghodsi, William K. StellO14 Contributions of ON and OFF pathways to emmetropization and form deprivation myopia in miceMachelle T. Pardue, Ranjay Chakraborty, Han na Park, Curran S. Sidhu, P. Michael IuvoneO15 Response of the human choroid to defocusMichael J CollinsO16 What can RNA sequencing tell us about myopic sclera?Nethrajeith Srinvasalu, Sally A McFadden, Paul N BairdO17 Overview of dopamine, retinal function, and myopiaP. Michael IuvoneO18 The eye as a "robust" optical system and myopiaPablo ArtalO19 Effect of discontinuation of orthokeratology lens wear on axial elongation in childrenPauline Cho, SW CheungO20 Myopia prevention in TaiwanPei-Chang WuO21 Alternatives to ultraviolet light and riboflavin for in vivo crosslinking of scleral collagenQuan V. Hoang, Sally A. McFaddenO22 Absence of intrinsically photosensitive retinal ganglion cells (ipRGC) alters normal refractive development in miceRanjay Chakraborty, Duk C. Lee, Erica G. Landis, Michael A. Bergen, Curran Sidhu, Samer Hattar, P. Michael Iuvone, Richa...

The aim of this study was to determine the relationship between relative peripheral refraction and retinal shape by 2-D magnetic resonance imaging in high myopes. Thirty-five young adults aged 20 to 30 years participated in this study with 16 high myopes (spherical equivalent < −6.00 D) and 19 emmetropes (+0.50 to −0.50 D). An open field autorefractor was used to measure refractions from the center out to 60° in the horizontal meridian and out to around 20° in the vertical meridian, with a step of 3 degrees. Axial length was measured by using A-scan ultrasonography. In addition, images of axial, sagittal, and tangential sections were obtained using 2-D magnetic resonance imaging. The highly myopic group had a significantly relative peripheral hyperopic refraction and showed a prolate ocular shape compared to the emmetropic group. The highly myopic group had relative peripheral hyperopic refraction and showed a prolate ocular form. Significant differences in the ratios of height/axial (1.01 ± 0.02 vs. 0.94 ± 0.03) and width/axial (0.99 ± 0.17 vs. 0.93 ± 0.04) were found from the MRI images between the emmetropic and the highly myopic eyes (p < 0.001). There was a negative correlation between the retina’s curvature and relative peripheral refraction for both temporal (Pearson r = −0.459; p < 0.01) and nasal (Pearson r = −0.277; p = 0.011) retina. For the highly myopic eyes, the amount of peripheral hyperopic defocus is correlated to its ocular shape deformation. This could be the first study investigating the relationship between peripheral refraction and ocular dimension in high myopes, and it is hoped to provide useful knowledge of how the development of myopia changes human eye shape.

Purpose To investigate the differences in visual function between the attention deficit hyperactivity disorder (ADHD) children and their controls and to evaluate the training effect by utilizing virtual reality (VR) games.Methods A total of 60 participants aged between 6–13 were recruited. A series of visual function tests, including near point convergence (NPC), phoria in both distance and near, fusional vergence, amplitude of accommodation (AA) and accommodative facility (AF) were applied, and a vision-related questionnaire were also completed. 17 of ADHD children participated in the VR training program and the effect was evaluated pre-and post-training.Results The accommodative facility of the ADHD group were reduced compared to their controls (p = 0.015). The result showed that there were higher CISS scores in ADHD group (p < 0.001) and which was manifest with visual complaints of performance-related symptoms. After 3-months VR games training, significant improvement in NPC (p = 0.039) and a higher proportion of orthophoria was observed in ADHD group.Conclusions There were no significant differences in refractive error, NPC function, amplitude of accommodation and vergence fusional range between ADHD group and the controls, however, accommodative facility was significantly lower in the ADHD patients. In addition, a significant improvement in visual function was found after applying the VR games training to the ADHD children. Therefore, the results showed that VR training is a practical and efficient option to enhance visual function of ADHD population.

To evaluate the changes in visual function when progressive addition lenses (PAL) are added in children using topical atropine as a myopia control therapy. Daily visual complaints and the determination of their near correction were studied. Methods: Forty children aged 7-12 years were recruited. Distance and near visual acuity, accommodative lag, heterophoria, near point of convergence and stereopsis were examined, and a questionnaire of daily visual complaints was administered. Results: Significant differences in visual functions were found after the near correction was prescribed. Significant improvements in distance and near visual acuity, lag of accommodation and binocular visual function were observed, and fewer visual complaints were reported at the Harmon distance. Conclusion:The use of PAL is helpful for children undergoing topical atropine treatment for myopia control, particularly those receiving medium to high doses. This combination therapy could also be applied to younger children who have a low tolerance to contact lenses, with less risk of ocular adverse effects.