Article
Biochemical Research Methods
Rohan P. J. Hughes, Scott A. Read, Michael J. Collins, Stephen J. Vincent
Summary: This study examined anterior corneal, internal ocular, and total ocular higher order aberrations (HOA's), and retinal image quality in a non-myopic, paediatric cohort. The study found that internal ocular HOA's were higher in magnitude but partially compensated, resulting in reduced levels of HOA's and excellent retinal image quality. Weak correlations were observed between HOA's and age, sex, refractive error, and axial length. These findings provide an improved understanding of the optics and retinal image quality of children's eyes.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Multidisciplinary Sciences
Wesley Rogers, Daniel Smalley
Summary: Optical trap display (OTD) is an emerging display technology that can create full-color images in air. While OTDs currently lack the ability to show virtual images directly, this paper demonstrates the possibility of simulating virtual images using a time-varying perspective projection backdrop.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Ching-Huang Lin, Hsien-Chang Lin, Chien-Yu Chen, Chong-Chung Lih
Summary: This study examined the effects of using mobile devices with immersive virtual reality on the physiological parameters of both eyes. The results showed significant differences in the amplitude of accommodation, intraocular pressure, divergence/convergence, and stereopsis after using VR glasses. Watching three-dimensional movies in VR reduced intraocular pressure, which may be beneficial for treating glaucoma.
SCIENTIFIC REPORTS
(2022)
Article
Neurosciences
Rohan P. J. Hughes, Scott A. Read, Michael J. Collins, Stephen J. Vincent
Summary: Higher order aberrations increase and retinal image quality decreases significantly during higher levels of accommodation in children, similar to adults.
Article
Multidisciplinary Sciences
Einat Shneor, David P. Pinero, Ravid Doron
Summary: This study found that despite good visual acuity, patients with mild keratoconus showed decreased contrast sensitivity and increased higher-order aberrations compared to controls. Most higher-order aberrations were negatively correlated with contrast sensitivity.
SCIENTIFIC REPORTS
(2021)
Article
Ophthalmology
Rohan P. J. Hughes, Scott A. Read, Michael J. Collins, Stephen J. Vincent
Summary: This study investigates the changes in higher order aberrations and retinal image quality during accommodation in children with different refractive errors. The results show that near work has a greater impact on myopic children, while non-myopic children show greater changes in spherical aberration during accommodation.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Optics
Kishor Sapkota, Jessica Gomes, Sandra Franco
Summary: Knowledge of the effect of accommodation on image quality of peripheral retina is important, but studies in this area are limited. This study found that accommodation asymmetrically affected higher order aberrations in the central and peripheral retina.
Review
Neurosciences
Praveen K. Bandela, Shrikant R. Bharadwaj, Arthur Ho, Eric Papas
Summary: This review summarizes the research findings on accommodative responses in humans over the past 70 years, identifying multiple retinotopic cues that may contribute to solving the problem of retinal defocus. However, these studies have methodological and measurement issues, suggesting the use of Bayesian statistical cue-combination approach to address this problem.
Article
Ophthalmology
Huiwen Ye, Zhenzhen Liu, Qianzhong Cao, Charlotte Aimee Young, Zhangkai Lian, Xinyu Zhang, Danying Zheng, Guangming Jin
Summary: The study aimed to investigate the characteristics of corneal higher-order aberrations (HOAs) in patients with congenital ectopia lentis (CEL). Results showed that patients with CEL had higher corneal horizontal coma and lower corneal vertical coma primary spherical aberrations than healthy controls, providing important insights for clinical managements in patients with CEL.
TRANSLATIONAL VISION SCIENCE & TECHNOLOGY
(2021)
Article
Medicine, General & Internal
Yu Mizuno, Kazuyuki Hirooka, Yoshiaki Kiuchi
Summary: This study aimed to examine the effects of overhanging bleb on corneal higher-order aberrations. The findings showed that overhanging bleb after trabeculectomy increased corneal coma aberrations and coma-like aberrations. As the ratio of cornea covered by the bleb increased, all corneal higher-order aberrations, except for coma-like aberrations, also increased.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Ophthalmology
Marianne Ledet Maagaard, Ivan Nisted, Toke Bek
Summary: For school children, vergence treatment leads to faster recovery from CI compared to accommodation treatment, which can be used to improve compliance and success rate of the treatment.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Article
Engineering, Mechanical
Adrian Corrochano, Giuseppe D'Alessio, Alessandro Parente, Soledad Le Clainche
Summary: This work presents a new application of higher order dynamic mode decomposition (HODMD) combined with preprocessing techniques such as principal component analysis (PCA) for the analysis of reactive flows. The new methodology proves to be effective in identifying the main patterns and developing reduced order models. The algorithm is also coupled with feature selection step carried out via PCA and varimax rotation, showing outstanding capabilities in compressing original databases.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Optics
W. Becken, S. Trumm, P. Kerner, A. Muschielok, H. Altheimer, G. Esser, D. Uttenweiler
Summary: This article discusses the method of analytical wave tracing in dealing with complex optical systems, obtaining the desired order of wavefront derivatives by utilizing the ray transfer properties of the system, which improves efficiency.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2021)
Article
Computer Science, Artificial Intelligence
Olga E. Jumbo, Shihab Asfour, Ahmed M. Sayed, Mohamed Abdel-Mottaleb
Summary: Researchers use Zernike polynomial approximation to analyze the effects of Higher Order Aberrations (HOAs) on the human eye, creating a linear imaging system to simulate how the eye perceives source images. Through a cascade of two optical systems, source images are modified to be perceived without distortion at the retina, and Total Variation Regularization is employed to address blurring and loss of contrast introduced by this process, resulting in a 50% reduction in error with lower computational costs compared to existing methods using deconvolution and total variation regularization.
IEEE TRANSACTIONS ON IMAGE PROCESSING
(2021)
Article
Optics
Yanbo Zhao, Fengzhou Fang
Summary: In this study, a dynamic opto-mechanical eye model with a wide visual field was developed to validate the aberrometer for peripheral aberration measurement. The model consists of a plano-convex lens representing cornea, a double-convex lens representing crystalline lens, and a spherical retinal screen. The model's adjustable retina allows for Zernike 4th item (Z4 focus) range adjustment and the model can mimic human eyes with different visual field and pupil sizes in peripheral aberration measurement.
Article
Ophthalmology
Pedro Tana-Rivero, Salvador Aguilar-Corcoles, Ramon Ruiz-Mesa, Robert Montes-Mico
Summary: The study evaluated the repeatability of various corneal parameters provided by a high-resolution SS-OCT. The results showed good repeatability with low Sw and CoV values for most parameters, except for astigmatism. The ICC values were greater than 0.98, confirming the reliability of the measurements.
EUROPEAN JOURNAL OF OPHTHALMOLOGY
(2021)
Review
Ophthalmology
Robert Montes-Mico, Ramon Ruiz-Mesa, Jose Luis Rodriguez-Prats, Pedro Tana-Rivero
Summary: This review summarized the clinical outcomes of V4c implantable collamer lens for myopia correction, including data from 2904 eyes. The results suggest that the procedure is safe, efficient, and provides stable visual and refractive outcomes.
ACTA OPHTHALMOLOGICA
(2021)
Article
Ophthalmology
Pedro Tana-Rivero, Salvador Aguilar-Corcoles, Jose Luis Rodriguez-Prats, Robert Montes-Mico, Ramon Ruiz-Mesa
Summary: There were statistically significant differences in WTW measurement among the four devices, with Anterion and IOLMaster 700 potentially being interchangeable, as well as Anterion and Pentacam HR. However, IOLMaster 700 and Pentacam HR, as well as Cassini with any of the other three devices, may not be interchangeable.
INTERNATIONAL OPHTHALMOLOGY
(2021)
Article
Ophthalmology
Pedro Tana-Rivero, Salvador Aguilar-Corcoles, Cristina Tello-Elordi, Francisco Pastor-Pascual, Robert Montes-Mico
Summary: This study evaluated the agreement between 3 different optical biometers and found significant differences in ACD, CCT, WTW, LT, and AL. IOLMaster showed the highest values in ACD, CCT, and WTW compared to ANTERION and Pentacam.
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
(2021)
Review
Ophthalmology
Robert Montes-Mico, Francisco Pastor-Pascual, Ramon Ruiz-Mesa, Pedro Tana-Rivero
Summary: This study aimed to summarize the outcomes reported using SS-OCT for ocular biometry, finding that SS-OCT biometers provide excellent repeatability and reproducibility outcomes for parameters used in IOL power calculation, indicating they may become the gold standard for ocular biometry.
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
(2021)
Article
Ophthalmology
Ramon Ruiz-Mesa, Julia Blanch-Ruiz, Maria Ruiz-Santos, Robert Montes-Mico
Summary: The study aimed to evaluate the optical quality and visual performance of patients implanted with EDOF IOL, showing good postoperative visual acuity and satisfaction among patients, with a continuous range of vision at intermediate distances in the defocus curve.
INTERNATIONAL OPHTHALMOLOGY
(2021)
Article
Ophthalmology
Pedro Tana-Rivero, Maria Dolores Rodriguez-Carrillo, Maria Ruiz-Santos, Berta Garcia-Tomas, Robert Montes-Mico
Summary: The study compared ATA distance and AQD readings from different OCT devices and a Scheimpflug camera. Results showed that TD-OCT and SS-OCT can be used interchangeably for ATA distance measurement, but not with Pentacam. Vertical ATA distance was significantly larger than horizontal, and there were significant differences in AQD values between devices.
JOURNAL OF REFRACTIVE SURGERY
(2021)
Article
Ophthalmology
Robert Montes-Mico
Summary: This study evaluated the repeatability and agreement of various biometric parameters using 6 biometers based on different optical technologies. The results showed that these biometers provided repeatable measurements for different parameters, but there were significant differences between the biometers. Therefore, the interchangeability of these devices should be carefully considered when using them.
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
(2022)
Article
Ophthalmology
Pedro Tana-Sanz, Maria Dolores Rodriguez-Carrillo, Belen Elvira-Giner, Maria Ruiz-Santos, Robert Montes-Mico, Pedro Tana-Rivero
Summary: The study demonstrates that the EDOF IOL provides good visual performance at far and intermediate distances, making it a suitable option for patients looking to reduce spectacle dependence at intermediate distances.
JOURNAL OF REFRACTIVE SURGERY
(2021)
Article
Ophthalmology
Francisco Lara-Lacarcel, Ivan Marin-Franch, Vicente Fernandez-Sanchez, Resurreccion Riquelme-Nicolas, Norberto Lopez-Gil
Summary: The study found that there are small changes in both the power and axis of astigmatism during accommodation, especially when convergence is involved. These changes in astigmatism may be attributed to shifts in the position of the crystalline lens during accommodation.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2021)
Article
Ophthalmology
Francisco Pastor-Pascual, Rafael Pastor-Pascual, Robert Montes-Mico, Ramon Ruiz-Mesa, Pedro Tana-Rivero
Summary: The study results indicate that using Precizon IOL after FLACS in patients with different degrees of astigmatism can provide good visual acuity, accurate refractive outcomes, and excellent rotational stability.
INTERNATIONAL OPHTHALMOLOGY
(2022)
Article
Ophthalmology
Sarah Marie, Robert Montes-Mico, Noelia Martinez-Albert, Jose Garcia-Marques, Alejandro Cervino
Summary: The study aimed to assess the links between discomfort glare sensitivity and physiological factors among healthy individuals. The research found that female participants had lower discomfort thresholds than males, and discomfort thresholds were related to self-assessment of light sensitivity, sunglasses ownership, and frequency of use. Accessible physiological factors and questionnaires were unable to predict discomfort levels due to glare.
TRANSLATIONAL VISION SCIENCE & TECHNOLOGY
(2021)
Review
Ophthalmology
Robert Montes-Mico, Francisco Pastor-Pascual, Enrique Artiaga-Elordi, Ramon Ruiz-Mesa, Pedro Tana-Rivero
Summary: The review of 17 clinical studies between 2012 and 2021 shows that the ICL V4c model provides good optical quality after implantation, as demonstrated by various metrics.
Article
Engineering, Biomedical
Pedro Tana-Sanz, Maria Dolores Rodriguez-Carrillo, Maria Ruiz-Santos, Robert Montes-Mico, Ramon Ruiz-Mesa, Pedro Tana-Rivero
Summary: The study analyzed the agreement of predicted IOL power between three biometers and found significant differences in predictions, especially for short eyes. While the mean differences were clinically insignificant, the wide range of LoA values suggests potential clinical significance for specific cases.
EXPERT REVIEW OF MEDICAL DEVICES
(2021)
Article
Ophthalmology
Pedro Tana-Rivero, Ramon Ruiz-Mesa, Salvador Aguilar-Corcoles, Cristina Tello-Elordi, Maria Ramos-Alzamora, Robert Montes-Mico
Summary: Using the same high-resolution SS-OCT device, lens vault (LV) was measured in healthy eyes, revealing correlations with anterior chamber depth, axial length, anterior chamber volume, lens thickness, and age.
JOURNAL OF OPTOMETRY
(2022)
Article
Neurosciences
Ryan P. Silk, Hanagh R. Winter, Ouria Dkhissi-Benyahya, Carmella Evans -Molina, Alan W. Stitt, Vijay K. Tiwari, David A. Simpson, Eleni Beli
Summary: This study investigates whether diabetes affects the daily rhythm of gene expression in the retina. The results show that diabetic mice exhibited phase advancement in the expression of certain genes compared to non-diabetic mice. The study also identified oxygen-sensing mechanisms and HIF1alpha as potential upstream regulators. These findings provide important insights into the development of diabetic retinopathy.
Article
Neurosciences
Krishnamachari S. Prahalad, Daniel R. Coates
Summary: Visual stimuli presented around the time of a saccade can be perceived differently by the visual system, including a reduction in the harmful impact of flankers. This study investigated the effects of microsaccades on crowded stimuli placed 20 arc minutes from the center of gaze. The findings suggest two separate pre-saccadic benefits, one that regularizes the crowding zone and another that specifically benefits microsaccade targets surrounded by tangential flankers.
Article
Neurosciences
Chandrika Ravisankar, Christopher W. Tyler, Clifton M. Schor, Shrikant R. Bharadwaj
Summary: This study revealed that less than one-third of adults with normal binocular vision were able to successfully free-fuse random-dot image pairs and identify the embedded stereoscopic shapes. The successful participants showed a dissociation of vergence and accommodative responses, while the unsuccessful ones either exhibited strong vergence and accommodation or weak vergence and strong accommodation. Task performance of the unsuccessful cluster improved significantly with pharmacological paralysis of accommodation. A minority of participants also learned to dissociate one direction of their vergence and accommodation crosslinks with repeated free-fusion trials, optimizing their task performance.