Article
Neurosciences
Gaku Kiuchi, Takahiro Hiraoka, Yuta Ueno, Toshifumi Mihashi, Tetsuro Oshika
Summary: This study found that patient age and corneal astigmatism have a significant influence on corneal higher-order aberrations (HOAs), while refractive status (myopia, emmetropia, hyperopia) does not have a significant association with corneal HOAs. Age and corneal astigmatism were found to be correlated with aberrations in multiple regression analysis, but spherical equivalent refractive error and refractive status were not.
Article
Biochemical Research Methods
Dibyendu Pusti, Chloe Degre Kendrick, Yifei Wu, Qiuzhi Ji, Hae Won Jung, Geunyoung Yoon
Summary: The quantitative evaluation of peripheral ocular optics is crucial for myopia research and studying visual performance in individuals with normal and compromised central vision. We have developed a widefield scanning wavefront sensor (WSWS) that can scan along any retinal meridian while maintaining natural central fixation. The WSWS utilizes a unique scanning method involving a motorized rotary stage and a goniometer to scan horizontally and vertically, allowing for the evaluation of four meridians within 5 seconds.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Optics
Mike Chih-Wei Yeh, John Ching-Jen Hsiao, Dorcas Tsang, Frank Spors, Ching-Ying Cheng
Summary: The purpose of this study was to compare the effects of different types of soft contact lenses on peripheral refraction, higher-order aberrations, horizontal coma, and visual quality in young myopic adults. The results showed that the SoftOK and MiSight lenses performed better in terms of relative peripheral refraction, myopic defocus, and horizontal coma. The MiSight lens slightly reduced accommodative amplitude, and the SoftOK lens had significantly higher spherical aberration compared to the other lenses. However, the differences in horizontal coma were not statistically significant.
Article
Ophthalmology
Len Zheleznyak
Summary: This study investigates the impact of refractive error on peripheral image quality. Peripheral blur orientation is determined by optical aberrations and retinal shape. Peripheral blur anisotropy can play a role in accommodation, emmetropisation, and myopia control interventions. The study finds that different refractive errors result in variations in through-focus optical anisotropy and image quality, with myopes exhibiting vertically elongated blur, while emmetropes and hyperopes exhibit horizontally elongated blur.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Multidisciplinary Sciences
Yequan Huang, Jingyun Guo, Yu Guo, Yan Cui, Zhechuang Li, Xuechuan Dong, Xiaolin Ning
Summary: This paper introduces a novel wide-angle refraction measurement method called Refraction Topography (RT), and evaluates its agreement with simulation results and expected refraction. RT utilizes a refraction algorithm on fundus images to measure refraction. Unlike traditional methods, RT requires the subject to stare at a stationary target. The study demonstrates the agreement between the test results obtained using RT, simulation results, and expected refraction on three test eyes.
SCIENTIFIC REPORTS
(2023)
Article
Ophthalmology
Rebecca E. Leighton, Karen M. Breslin, Patrick Richardson, Lesley Doyle, Sara J. McCullough, Kathryn J. Saunders
Summary: This longitudinal study evaluated the impact of peripheral visual experience on childhood myopia. It found that myopic eyes had higher peripheral refraction, which was associated with greater axial elongation.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Medicine, General & Internal
Katharina Breher, Alejandro Calabuig, Laura Kuhlewein, Focke Ziemssen, Arne Ohlendorf, Siegfried Wahl
Summary: The study compared retinal curvatures derived from OCT scans vs. PRX measurements, showing low correlation between the two methods. PRX tends to underestimate retinal radius, especially with increasing myopia.
JOURNAL OF CLINICAL MEDICINE
(2021)
Review
Ophthalmology
Victor Rodriguez-Lopez, Carlos Dorronsoro
Summary: The evaluation of refractive error is crucial in eye care, and subjective refraction has been the gold standard method for centuries. This article reviews recent technologies and approaches aiming to improve subjective refraction.
CURRENT OPINION IN OPHTHALMOLOGY
(2022)
Article
Medicine, General & Internal
Weicong Lu, Rongyuan Ji, Wenzhi Ding, Yuyin Tian, Keli Long, Zhen Guo, Lin Leng
Summary: The study found that the multispectral refraction topography demonstrated good repeatability in measuring central and peripheral refraction, with minor differences observed in the nasal, temporal, superior, and inferior quadrants.
FRONTIERS IN MEDICINE
(2021)
Article
Medicine, General & Internal
Hanyu Zhang, Carly S. Y. Lam, Wing-Chun Tang, Myra Leung, Hua Qi, Paul H. Lee, Chi-Ho To
Summary: The aim of this study is to investigate the influence of baseline relative peripheral refraction (RPR) on myopia control effects in Chinese myopic children wearing Defocus Incorporated Multiple Segments (DIMS) lenses. The results showed that baseline myopic RPR was associated with more myopic progression and greater axial elongation in the DIMS group, but not in the single vision (SV) group. Children with baseline myopic RPR in the DIMS group had statistically significant more myopia progression and axial elongation compared to those with baseline hyperopic RPR.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Medicine, General & Internal
Yih-Shiuan Kuo, May-Yung Yen, Pei-Yu Lin
Summary: The study revealed that 0.25% atropine caused a hyperopic shift in spherical equivalent and resulted in significant changes in total spherical aberration and internal spherical aberration in myopic children. However, the differences in corneal spherical aberration were not significant. This suggests that inhibiting accommodation may have a potential role in preventing myopic progression.
JOURNAL OF THE CHINESE MEDICAL ASSOCIATION
(2021)
Article
Ophthalmology
Trine M. Jakobsen, Anders P. Sondergaard, Flemming Moller
Summary: This study aimed to investigate changes in peripheral and relative peripheral refraction during orthokeratology lens use in children. Results showed that orthokeratology lens wear induced significant myopic relative peripheral refraction, but only changed peripheral refraction in two eccentric measuring points. Furthermore, baseline peripheral refraction, on-axis refraction, and relative peripheral refraction at 30 degrees nasal eccentricity were correlated with treatment efficacy.
ACTA OPHTHALMOLOGICA
(2023)
Article
Ophthalmology
Santiago Delgado-Tirado, Alberto Lopez-Miguel, Yazmin Baez-Peralta, Lucia Gonzalez-Buendia, Itziar Fernandez, Jorge L. Alio, Miguel J. Maldonado, Rosa M. Coco-Martin
Summary: The study aimed to assess monochromatic higher order aberrations in highly myopic eyes with staphyloma, revealing significant differences in patients aged <= 45 years between groups with and without dome-shaped macula.
Article
Clinical Neurology
Xiaohang Chen, Yan Xiong, Xinzhou Qi, Longqian Liu
Summary: The objective of this study was to observe the changes in peripheral refraction in myopic adolescents after overnight orthokeratology and its influencing factors. The results showed that after wearing orthokeratology lenses, the relative peripheral refraction in myopic patients changed from relative hyperopia to relative myopia, and the nasal-temporal asymmetry also changed significantly. This change was correlated with the baseline refractive state.
FRONTIERS IN NEUROLOGY
(2023)
Article
Ophthalmology
Lin-Song Qi, Lu Yao, Xue-Feng Wang, Jin Zhao, Yong Liu, Teng-Yun Wu, Qing-Hong Yang, Chen Zhao, Zhi-Kang Zou
Summary: This study aimed to investigate the characteristics of peripheral refraction and its relationship with myopia development in a group of male teenage Chinese students. The results showed that changes in central refraction were significantly correlated with changes in relative peripheral refraction. Students who developed myopia had higher relative peripheral hyperopia. Baseline central refraction and relative peripheral hyperopia at 10 degrees nasal were found to be protective of myopia onset.
INTERNATIONAL JOURNAL OF OPHTHALMOLOGY
(2022)
Article
Ophthalmology
David A. Atchison, Marwan Suheimat, Stanislovas Zacharovas, Charles E. Campbell
Summary: Through simulations, it was found that Grand-Seiko autorefractors with annular targets are likely to provide valid peripheral refractions. The results were closer to Zernike refractions and spherical aberration had up to 0.5D impact on refraction, while peripheral coma had limited influence.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2022)
Article
Nutrition & Dietetics
Stephanie Hannah, Kingsley E. Agho, Milan K. Piya, Kristen Glenister, Lisa Bourke, Uchechukwu L. Osuagwu, David Simmons
Summary: This study examined the changes in obesity prevalence and associated lifestyle factors in the Goulburn Valley region of Victoria. The results showed an increase in obesity prevalence over 15 years, particularly in rural areas. However, there was a decrease in obesity prevalence among individuals with adequate fruit intake. Obesity was associated with older age, consumption of fried food, and physical inactivity.
Article
Public, Environmental & Occupational Health
Bernadine N. Ekpenyong, Emmanuel K. Abu, Raymond Langsi, Uchechukwu L. Osuagwu, Richard Oloruntoba, Godwin Ovenseri-Ogbomo, Chikasirimobi G. Timothy, Deborah D. Charwe, Obinna Nwaeze, Christopher P. Goson, Chundung A. Miner, Tanko Ishaya, Khathutshelo P. Mashige, Kingsley E. Agho
Summary: In the Sub-Saharan African region, there are no significant differences in knowledge and risk perception of COVID-19 among the population. However, individuals from West Africa have higher attitude scores. Lower education and lack of worry about COVID-19 are associated with lower knowledge scores and risk perception across the regions in Sub-Saharan Africa.
HEALTH PROMOTION PERSPECTIVES
(2022)
Article
Public, Environmental & Occupational Health
Uchechukwu L. Osuagwu, Khathutshelo P. Mashige, Godwin Ovenseri-Ogbomo, Esther Awazzi Envuladu, Emmanuel Kwasi Abu, Chundung Asabe Miner, Chikasirimobi G. Timothy, Bernadine N. Ekpenyong, Raymond Langsi, Onyekachukwu M. Amiebenomo, Richard Oloruntoba, Piwuna Christopher Goson, Deborah Donald Charwe, Tanko Ishaya, Kingsley E. Agho
Summary: This study examined the impact of information sources on COVID-19 vaccine hesitancy and resistance in sub-Saharan Africa (SSA). The results showed that all six information sources, except for radio, were strong predictors of resistance towards COVID-19 vaccination. Further research is needed on how these channels can be used to improve the availability of reliable healthcare information.
Article
Ophthalmology
David A. Atchison, Jos J. Rozema
Summary: This study provides an overview of the misconceptions and potential artefacts associated with measuring peripheral refractive error and eye length, and discusses their implications for determining retinal shape and myopia development. Several issues were identified, such as the relationship between peripheral refractive error and myopia development, and the accuracy of measuring peripheral eye length using an optical biometer. Some of these issues can be addressed, while others require further investigation.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Ophthalmology
Dinesh Kaphle, Katrina L. Schmid, Marwan Suheimat, Scott A. Read, David A. Atchison
Summary: The purpose of this study was to investigate the relationship between peripheral choroid thickness and eye length changes during accommodation. The results showed that eye length increased with accommodation, while the choroid thinned. The thinning of the choroid accounted for approximately 60% of the eye length increase.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Public, Environmental & Occupational Health
Tiffany Tan, Sonia Chan, Melissa Ind, Georgia Pace, Jannine Bailey, Krista Reed, Teagan Dutton, Uchechukwu Levi Osuagwu, Kam Cheong Wong
Summary: This qualitative study explored the benefits and challenges of e-prescribing for GPs and pharmacists in regional NSW. The study found that e-prescribing can improve the prescribing and dispensing process, patient adherence, and prescription safety. However, challenges include concerns about safety and security, costs of software updates, and the need for education among healthcare professionals and patients.
AUSTRALIAN JOURNAL OF RURAL HEALTH
(2023)
Article
Ophthalmology
Annabelle Seddon, Hanna M. Chaki, Hang-My J. D. Phan, Jessica G. Spink, Matthew L. P. Ha, Surini Wijesuriya, David A. Atchison, Andrew Carkeet
Summary: This study investigated how unequal image sizes between the eyes affect visual acuity. The results showed that induced aniseikonia slightly reduced binocular visual acuity, but the change was small and cannot be used as a diagnostic marker in clinical settings.
CLINICAL AND EXPERIMENTAL OPTOMETRY
(2023)
Article
Public, Environmental & Occupational Health
Dahai Yu, Uchechukwu Levi Osuagwu, Karen Pickering, John Baker, Richard Cutfield, Zheng Wang, Yamei Cai, Brandon J. Orr-Walker, Gerhard Sundborn, Zhanzheng Zhao, David Simmons
Summary: The study examines the separate population-level contributions of ethnic and socioeconomic disparities among people with type 2 diabetes mellitus and residence in New Zealand. The findings indicate that socioeconomic deprivation has a significant impact on stroke, while ethnicity is important for end-stage renal disease.
CLINICAL EPIDEMIOLOGY
(2023)
Article
Multidisciplinary Sciences
Ngozika Esther Ezinne, Anayochukwu E. Anyasodor, Dipesh Bhattarai, Kingsley Kene Ekemiri, James Aliah, Phillips Kureem, Michael Agyemang Kwarteng, Khathutshelo Percy Mashige, Uchechukwu Levi Osuagwu
Summary: This study aimed to assess the knowledge, attitude, and perception of optometrists in Trinidad & Tobago towards teleoptometry. The findings showed that although the participants had limited knowledge of teleoptometry, particularly among self-employed and less experienced optometrists, most of them had positive attitudes and perceptions towards teleoptometry. It is recommended to provide teleoptometry training among optometrists in Trinidad & Tobago to address the identified knowledge gap.
Article
Ophthalmology
Martin de Tomas, Abel Szeps, Gabriel Martin, Juan Manuel Suarez, David A. Atchison, Jos J. Rozema, Rafael Iribarren
Summary: This study analyzed OCT images of retinal shadows caused by defocus and diffusion optics spectacles. The results showed obvious retinal shadows in the periphery of the images, while the central area remained clear. The discrepancy between the actual size of the shadows and their appearance in the OCT images was attributed to the scanning OCT beam not being parallel to the optical axis. With device-specific correction, retinal OCT images can help visualize the regions affected by defocus or lowered contrast induced by myopia control spectacles.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Ophthalmology
Stephen Ocansey, Edgar Ekure, Uchechukwu L. Osuagwu, Bernadine N. Ekpenyong, Godwin Ovenseri-Ogbomo, Sylvester Kyeremeh, Kelechi C. Ogbuehi, Kingsley E. Agho, Khathutshelo P. Mashige, Antor O. Ndep, Kovin S. Naidoo
Summary: This study aimed to profile glaucoma diagnosis adherence to practice guidelines among optometrists in Ghana and Nigeria. Results showed that Ghanaian optometrists were more likely to diagnose glaucoma than Nigerian optometrists, and those who have practiced for more than 10 years and work in private practice were more likely to diagnose glaucoma. The study provides valuable information for evaluating glaucoma assessment for optometrists in both countries.
Article
Cardiac & Cardiovascular Systems
Dahai Yu, Bingjie Qu, Uchechukwu Levi Osuagwu, Karen Pickering, John Baker, Richard Cutfield, Yamei Cai, Brandon J. Orr-Walker, Gerhard Sundborn, Zhanzheng Zhao, David Simmons
Summary: This study found a mediating effect of type 2 diabetes (T2D) on the risk of atrial fibrillation (AF) in a population with impaired glucose tolerance (IGT) in New Zealand. The development of risk scores and future replication studies can help identify and guide management of individuals with IGT at the highest risk of AF following incident T2D.
JOURNAL OF THE AMERICAN HEART ASSOCIATION
(2023)
Article
Public, Environmental & Occupational Health
Zheng Wang, Dahai Yu, Uchechukwu Levi Osuagwu, Karen Pickering, John Baker, Richard Cutfield, Yamei Cai, Brandon J. Orr-Walker, Gerhard Sundborn, Zhanzheng Zhao, David Simmons
Summary: This study aimed to examine socioeconomic inequality in cause-specific outcomes among adults with impaired glucose tolerance and/or impaired fasting glucose in New Zealand. The study found that males, older individuals, those who were more deprived and identified as Maori, as well as individuals with obesity, current smoking, both impaired fasting glucose and impaired glucose tolerance, and greater metabolic derangement were more likely to have higher mortality and hospitalization rates, as well as worsened socioeconomic inequality.
CLINICAL EPIDEMIOLOGY
(2023)
Article
Ophthalmology
David A. Atchison, David L. Cooke
Summary: A thin lens technique was developed to determine how the effective powers of toric monofocal intraocular lenses (IOLs) are influenced by tilt and refractive errors. The correction required at the front of the eye and the power of an IOL that would compensate for the tilt were determined through a series of steps.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)