Article
Ophthalmology
Donald O. Mutti, Loraine T. Sinnott, David A. Berntsen, Lisa A. Jones-Jordan, Danielle J. Orr, Jeffrey J. Walline
Summary: This study compared axial and peripheral eye elongation during myopia therapy with multifocal soft contact lenses. The findings suggest that wearing +2.50 D addition multifocal contact lenses can neutralize or reverse the increase in retinal steepness caused by single vision lenses.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Article
Ophthalmology
Antonio Queiros, Alejandro Cervino, Jose Manuel Gonzalez-Meijome
Summary: This study measured the refraction patterns of myopic eyes with spectacle lenses correction and lens-free emmetropes at different target distances. It was found that accommodation to very near targets (up to 0.20 m) makes the off-axis refraction of myopes wearing their spectacle correction similar to that of lens-free emmetropes, with a significant reduction in off-axis astigmatism observed.
Article
Chemistry, Multidisciplinary
Gema Corpus, David P. Pinero
Summary: This study characterizes the optical and visual changes in the short-term wear of a hydrophilic contact lens based on extended focus technology. It finds that the lens improves visual acuity and quality but also leads to increased ocular aberrations and a trend of reduced accommodation lag.
APPLIED SCIENCES-BASEL
(2022)
Article
Ophthalmology
James S. Wolffsohn, Monica Jong, Earl L. Smith, Serge R. Resnikoff, Jost B. Jonas, Nicola S. Logan, Ian Morgan, Padmaja Sankaridurg, Kyoko Ohno-Matsui
Summary: The International Myopia Institute (IMI) is focused on advancing research, education, and management in the field of myopia to reduce the incidence of future vision impairment and blindness associated with increasing myopia. By promoting collaboration and knowledge sharing, IMI addresses issues such as pathologic myopia, the impact of myopia, risk factors, accommodation, binocular vision, and myopia prevention.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Article
Ophthalmology
Katrina L. Schmid, Kate L. Gifford, David A. Atchison
Summary: This study evaluated the effects of multifocal soft contact lenses on visual quality, accommodation, and vergence in young adult myopes. The results showed that the two aspheric designs had a greater impact on visual acuity, contrast sensitivity, and accommodation response compared to the concentric design.
CONTACT LENS & ANTERIOR EYE
(2023)
Article
Ophthalmology
Fei Luo, Jie Hao, Lei Li, Jiawen Liu, Weiwei Chen, Jing Fu, Nathan Congdon
Summary: The purpose of this study was to investigate the association between refractive error, habitual accommodative tone (HAT) and the incidence and progression of myopia in Tibetan children. The results showed that baseline spherical equivalent (SE) was significantly associated with the occurrence of myopia and its progression. Additionally, lower baseline HAT was found to be potentially associated with myopic development in hyperopic children.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2023)
Article
Ophthalmology
Kai Yip Choi, Henry Ho-Lung Chan
Summary: The study found an interaction between external environmental factors and intrinsic factors that may contribute to juvenile myopia progression. The relationship between intrinsic factors and myopia progression was stronger when the external risk was low, but was abolished when the external risk was high. External environmental factors significantly improved the variance in myopia progression explained by intrinsic factors.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Article
Ophthalmology
Kate L. Gifford, Katrina L. Schmid, Josh M. Collins, Clare B. Maher, Riya Makan, Evonne Nguyen, Gemma B. Parmenter, Bronte M. Rolls, Xinyue S. Zhang, David A. Atchison
Summary: The study found that young myopes wearing aspheric multifocal contact lenses experienced reductions in accommodation response, while concentric dual-focus contact lenses caused greater refraction instabilities. These results suggest that the mechanism of multifocal contact lenses slowing myopia progression is unlikely to be through relaxing accommodation.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2021)
Article
Multidisciplinary Sciences
Hyeon Jeong Yoon, Hyun Sik Moon, Mi Sun Sung, Sang Woo Park, Hwan Heo
Summary: The study found that using a virtual reality smartphone-based head-mounted display (VR SHMD) device resulted in significant changes in visual parameters, while using smartphones had lesser effects. The subjective discomfort associated with dry eye and neurologic symptoms were more severe in the VR group compared to the smartphone group. There were no significant changes in refraction and choroidal thickness after the use of either of the two devices.
SCIENTIFIC REPORTS
(2021)
Article
Medicine, General & Internal
Aparna Gopalakrishnan, Jameel Rizwana Hussaindeen, Viswanathan Sivaraman, Meenakshi Swaminathan, Yee Ling Wong, James Andrew Armitage, Alex Gentle, Simon Backhouse
Summary: This study aimed to compare the agreement between cycloplegic and non-cycloplegic autorefraction and establish a myopia threshold. The results showed that non-cycloplegic refraction underestimates hyperopia and overestimates myopia, but the difference is minimal and not clinically significant for myopic subjects. A threshold of SE <= -0.75 D for defining myopia prevalence using non-cycloplegic refraction is comparable to the standard definition of SE <= -0.50 D for cycloplegic myopic refraction.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Neurosciences
Fan Jiang, Xiaopeng Huang, Houxue Xia, Bingqi Wang, Fan Lu, Bin Zhang, Jun Jiang
Summary: The study found that the spatial distribution of the relative corneal refractive power shift plays a significant role in myopia control. Corneal reshaping induced less axial length elongation compared to multifocal soft contact lenses, indicating that contact lenses inducing RCRPS closer to the corneal center may have a better effect on myopia control.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Ophthalmology
Beatriz Redondo, Jesus Vera, Ruben Molina, Tomas Galan, Pedro Machado, Raimundo Jimenez
Summary: This study aimed to examine the accommodative and behavioral performance while wearing dual-focus and single-vision soft contact lenses. The results showed that wearing dual-focus soft contact lenses led to increased lag of accommodation, variability of accommodation, and reaction time.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2022)
Article
Environmental Sciences
Maria Concepcion Marcellan, Francisco J. Avila, Jorge Ares, Laura Remon
Summary: Peripheral refraction plays a role in the development of myopia. This study compared relative peripheral refraction (RPR) in uncorrected and corrected eyes using two different soft contact lenses (CL) designed for myopia control. The results showed that the RPR was hyperopic with uncorrected and extended depth of focus (EDOF) CL, but became myopic with dual focus (DF) CL. Significant differences were found between RPR curves with both CLs, and there was a relationship between RPR at 30 degrees and myopia level.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Ophthalmology
Liyuan Sun, Xuewei Li, Heng Zhao, Yan Li, Kai Wang, Jia Qu, Mingwei Zhao
Summary: The purpose of this study was to investigate the relationship between patients' baseline biometric factors or lens parameters and the diameter of the treatment zone in young myopic children undergoing Corneal Refractive Therapy. Retrospective review of data from patients undergoing Corneal Refractive Therapy lens treatment within two years was conducted. Results showed that spherical refraction, flat keratometric reading, Reverse Zone Depth 2, Landing Zone Angle 1, and lens diameter were independent factors of treatment zone diameter. Logistic regression analysis accurately predicted the treatment zone size with a 71.5% accuracy.
CONTACT LENS & ANTERIOR EYE
(2023)
Article
Multidisciplinary Sciences
Shyan-Tarng Chen, Hsiao-Ching Tung, Yan-Ting Chen, Chuen-Lin Tien, Chih-Wei Yeh, Jheng-Sin Lian, Ching-Ying Cheng
Summary: The purpose of this study was to investigate the influence of different optical designs of contact lenses on binocular vision and visual behavior among young adults. The results showed that contact lenses can change the accommodation and vergence demands of the eyes and have a significant impact on binocular vision.
SCIENTIFIC REPORTS
(2022)
Article
Ophthalmology
Jose Vicente Garcia-Marques, Rute Juliana Macedo-De-Araujo, Alejandro Cervino, Santiago Garcia-Lazaro, Jose Manuel Gonzalez-Meijome
Summary: The study aimed to validate an algorithm for assessing meibomian gland visibility and evaluate changes in meibomian glands in scleral lens wearers over one year. Infrared meibography images were obtained and classified into groups based on gland visibility. The proposed method showed objective and repeatable assessment of meibomian gland visibility. Scleral lens wear did not negatively affect gland drop-out and visibility, and may even improve dry eye symptoms after one year.
CONTACT LENS & ANTERIOR EYE
(2023)
Article
Ophthalmology
Zhe Zhang, Zhi Chen, Jiaqi Zhou, Jaume Paune, Feng Xue, Li Zeng, Xiaomei Qu, Xingtao Zhou
Summary: This study found that orthokeratology lenses with smaller back optic zone diameter design may lead to faster myopic reduction and a smaller aspheric treatment zone.
OPTOMETRY AND VISION SCIENCE
(2022)
Review
Ophthalmology
Reut Ifrah, Lluisa Quevedo, Liat Gantz
Summary: Contact lens wearers often experience ocular discomfort, such as dry eye symptoms, which can lead to discontinuation of lens wear. Meibomian gland dysfunction (MGD) is identified as the primary cause of evaporative dry eye. This article reviews studies on the association between contact lens use and MGD, presenting evidence that suggests the impact of lens wear on meibomian gland morphology and function. However, further research is needed to clarify the relationship between MGD and contact lens wear, considering factors such as lens material and wear times, through prospective studies with control non-lens wearers.
JOURNAL OF OPTOMETRY
(2023)
Review
Chemistry, Analytical
Andre Rino Amorim, Boris Bret, Jose M. Gonzalez-Meijome
Summary: This review aims to gather technical information on existing optomechanical eye models (OME) for image quality assessment in various applications. Several physical eye models were examined from peer-reviewed papers and patent applications. The review focuses on the materials, physical characteristics, and dimensions of the main components of the eye models. The features and limitations of different models are discussed and compared. The potential use of artificial eye models in industrial applications is also briefly discussed.
Article
Ophthalmology
Reut Ifrah, Lluisa Quevedo, Liat Gantz
Summary: This study examined the repeatability, reproducibility, and within-subject variability of the Cobra HD fundus camera in participants with and without dry eye symptoms. The results showed that the camera demonstrated good repeatability, reproducibility, and low within-subject variability, making it a reliable clinical instrument for meibography.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Medicine, General & Internal
Ana Amorim-de-Sousa, Jaume Paune, Sara Silva-Leite, Paulo Fernandes, Jose Manuel Gozalez-Meijome, Antonio Queiros
Summary: The effect of a contact lens (CL) intended for myopia control on choroidal thickness (ChT) and retinal electrical response was investigated. It was found that the radial power gradient CL (PG) increased ChT and attenuated the amplitude of retinal response. These effects may be due to the combined impact of induced peripheral defocus and high-order aberrations on the central retinal image.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Medicine, General & Internal
Sara Silva-Leite, Ana Amorim-de-Sousa, Antonio Queiros, Jose Manuel Gonzalez-Meijome, Paulo Fernandes
Summary: This study aimed to evaluate the peripheral defocus induced with a perifocal ophthalmic lens for myopia progression control and its impact on visual function. The study found that the perifocal lenses induced myopic defocus on the nasal retina but not on the temporal retina. Additionally, there were no significant differences in visual contrast sensitivity and light disturbance between the monofocal and perifocal lenses.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Medicine, General & Internal
Fidel Vega, Miguel Faria-Ribeiro, Jesus Armengol, Maria S. Millan
Summary: The strong wavelength dependency of diffractive elements raises doubts about the reliability of NIR-based clinical instruments for assessing the visual quality of eyes implanted with DMIOLs. Ordinary compensation for chromatic aberration is inadequate due to the wavelength-dependent energy efficiency of diffractive orders used in DMIOL design. This paper demonstrates the differences in physical performance of three commercial DMIOL designs when using visible spectrum or NIR wavelength, showing that these differences can affect all the foci of a DMIOL, including the far focus.
Article
Optics
Maria Mecho-Garcia, Inaki Blanco-Martinez, Paulo Fernandes, Rute J. Macedo-de-Araujo, Miguel Faria-Ribeiro, Jose Manuel Gonzalez-Meijome
Summary: This study aimed to investigate the effect of pupil dilation with Phenylephrine Hydrochloride (PHCl) on the accommodative response and Zernike coefficient magnitude. Results showed statistically significant differences in the Zernike coefficients C-3(-1), C-3(1), C-4(0), and C-6(0) between natural conditions and after pupil dilation with PHCl.
Article
Optics
Ana Amorim-de-Sousa, Paulo Fernandes, Noberto Lopez-Gil, Antonio Queiros, Jose M. Gonzalez-Meijome
Summary: The purpose of this study was to investigate the retinal electrical activity in response to grids of different spatial orientations. The results showed that the retinal response was higher with grids of parallel orientation to the retinal meridians and lower with perpendicularly oriented grids. These findings are important for understanding eye growth regulation and myopia control treatments.
Article
Pediatrics
Antonio Queiros, Pauline Beaujeux, Louisette Bloise, Aurelia Chaume, Jean Philippe Colliot, Dominique Plaisant Proust, Perrine Rossi, Bertrand Tritsch, Dominique Bastien Crinon, Jaume Paune
Summary: The purpose of this study was to evaluate the effect of orthokeratology treatment with DRL lenses on myopia progression compared to single vision glasses users. A 2-year retrospective multicenter study was conducted in France to analyze the clinical efficacy of orthokeratology treatment with DRL lenses for myopia correction in children and adolescents. The results showed that after 1 and 2 years of treatment, orthokeratology with DRL lenses had a significant control effect on myopia compared to spectacle wearers.
Article
Ophthalmology
Jose Salgado-Borges, Anabela Borges, Isabel Ferreira, Jose Manuel Gonzalez-Meijome, Miguel Faria-Ribeiro
Summary: This study compared the refractive power profile, subjective depth-of-field, and objective optical quality of two advanced monofocal intraocular lenses. The results showed that both lenses had similar refractive power profiles and objective optical quality, but there was a slight difference in subjective performance.
GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
(2023)
Article
Ophthalmology
Reut Ifrah, Lluisa Quevedo, Gal Hazrati, Shiran Maman, Huluager Mangisto, Eden Shmuel, Liat Gantz
Summary: This study found that contact lens wearers are more likely to have meibomian gland dysfunction compared to non-contact lens wearers. Contact lens wearers who did not attend regular follow-up visits had more pronounced symptoms and higher likelihood of meibomian gland loss and other abnormalities.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)