Article
Multidisciplinary Sciences
Isaac W. Chay, Sheng Tong Lin, Edmund Wl Lim, Wee Jin Heng, Muhammad Amir Bin Ismail, Marcus Cl Tan, Paul SB. Zhao, Gerard KM. Nah, Bryan CH. Ang
Summary: This study examined the associations between higher order aberrations (HOAs), visual performance, demographics, and ocular characteristics in a young Asian population with high myopia. The results showed that Chinese individuals had higher internal total HOA compared to Malay individuals. Greater HOAs were associated with poorer visual performance in low luminance and reduced contrast conditions.
Article
Chemistry, Multidisciplinary
Julian Espinosa Tomas, Jorge Perez Rodriguez, David Mas Candela, Carmen Vazquez Ferri, Esther Perales
Summary: This study proposes a method to objectively determine subjects' monocular and uncorrected decimal visual acuity by assessing image quality using image and video processing algorithms. The method proves to be effective in quantifying human tolerance to image degradation and improves image quality.
APPLIED SCIENCES-BASEL
(2023)
Article
Ophthalmology
Aparna Badrinarayanan, Akshaya C. Balakrishnan, Ronit Dutta, R. Mahesh Kumar, Asif Iqbal
Summary: The study investigated the impact of front surface eccentricity (FSE) of scleral lenses (SLs) on corrected distance visual acuity (CDVA), contrast sensitivity (CS), and higher-order aberrations (HOAs) in keratoconic eyes. Different eccentricity values of SLs were tested and found to significantly improve CDVA and CS, as well as reduce HOAs. Practitioners should consider utilizing this distinct feature of SLs to enhance visual performance in keratoconus patients.
EYE & CONTACT LENS-SCIENCE AND CLINICAL PRACTICE
(2023)
Article
Ophthalmology
Yunyun Chen, Chenglu Ding, Xue Li, Yingying Huang, Fengchao Zhou, Bjorn Drobe, Hao Chen, Jinhua Bao
Summary: The aim of this study was to evaluate the short-term effects of peripheral gradient high-addition multifocal soft contact lenses and orthokeratology on visual performance in myopic children. The results showed that both MFSCLs and Ortho-K lenses significantly increased aberrations compared to single-vision spectacles. MFSCLs performed slightly worse than Ortho-K lenses in terms of low-contrast visual acuity.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2023)
Article
Multidisciplinary Sciences
Nikolaus Luft, Jakob Siedlecki, Franziska Reinking, Wolfgang J. Mayer, Benedikt Schworm, Stefan Kassumeh, Siegfried G. Priglinger, Martin Dirisamer
Summary: This study aimed to investigate the influence of extreme corneal keratometry on the outcomes of SMILE surgery. The results showed that SMILE can achieve satisfactory outcomes in patients with steep (>=47D) or flat (<42D) preoperative keratometry, but may induce more spherical aberration in the flat cornea group postoperatively.
SCIENTIFIC REPORTS
(2021)
Article
Ophthalmology
Abdelkader Sidi Mohamed Hamida, Garcia-Barchin Marta, Ruiz-Fortes Pedro, David P. Pinero
Summary: This study investigated the visual improvement achieved with a specific model of scleral contact lens in keratoconus eyes and identified predictors for such improvement. The findings demonstrated that the evaluated scleral contact lens effectively improved visual acuity and corrected ocular aberrations. The visual acuity improvement could be predicted based on pre-fitting variables.
Article
Ophthalmology
Fereshte Berjandy, Payam Nabovati, Hassan Hashemi, Abbasali Yekta, Hadi Ostadimoghaddam, Sara Sardari, Mehdi Khabazkhoob
Summary: This study aimed to find the appropriate correlation between the base curve of RGP contact lenses and manual keratometry findings in Iranian patients with keratoconus, in order to simplify the fitting process, reduce time, and lower costs. The study concluded with an equation for the correlation between BC and keratometry values, providing advantages such as simplifying the fitting process, reducing examination time, lowering costs, and increasing confidence in both examiners and patients. Through the use of a specific trial set with fixed parameters, the study also highlighted the ease of lens fitting in remote areas where advanced devices are not readily available.
CONTACT LENS & ANTERIOR EYE
(2021)
Article
Ophthalmology
Natsuko Hatsusaka, Naoki Tanimura, Mai Yamazaki, Norihiro Mita, Yuki Ukai, Yusuke Seki, Hisanori Miyashita, Tsuyoshi Mito, Eri Kubo, Hiroshi Sasaki
Summary: We investigated the decline in visual function in eyes with retrodots (RDs). The results showed that eyes with RDs had lower corrected distance visual acuity and contrast visual acuity, higher straylight values, and were more myopic.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Article
Ophthalmology
Abdelrahman Salman, Marwan Ghabra, Taym R. Darwish, Obeda Kailani, Hussein Ibrahim, Hakam Ghabra
Summary: This study evaluated the changes in corneal higher-order aberrations (HOAs) following epithelium-off accelerated corneal cross-linking (A-CXL) and its impact on visual acuity. The results showed that A-CXL treatment improved corneal HOAs and significantly improved visual acuity at 12 months. The change in secondary coma had a significant and independent effect on corrected distance visual acuity (CDVA).
Article
Neurosciences
Xue Li, Chenglu Ding, Yuhao Li, Ee Woon Lim, Yi Gao, Bruno Fermigier, Adeline Yang, Hao Chen, Jinhua Bao
Summary: The study found that the lenslet structure minimally impaired short-term visual performance on myopia control spectacle lenses, with concentric rings of aspherical lenslets having a significantly lower impact on both visual acuity and contrast sensitivity compared to honeycomb configuration with spherical lenslets.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Multidisciplinary Sciences
Shrilekha Vedhakrishnan, Maria Vinas, Clara Benedi-Garcia, Pilar Casado, Susana Marcos
Summary: A better understanding of visual performance with Multifocal Contact Lenses (MCLs) is important for both young eyes to control myopia progression and presbyopes to compensate for the lack of accommodation. This study evaluated the visual acuity of MCLs at different distances and found that MCLs improved near vision in both young adults and presbyopes, while maintaining far vision in young adults. Visual imbalance was also reduced with MCLs.
Article
Ophthalmology
Aysegul Penbe, Hatice Selen Kanar, Saban Simsek
Summary: The study examined the use of scleral contact lenses for visual rehabilitation in patients post penetrating keratoplasty. Results showed significant improvements in visual acuity, refractive errors, and high order aberrations with the use of scleral lenses. Complications related to scleral lens wear were minimal and manageable.
EYE & CONTACT LENS-SCIENCE AND CLINICAL PRACTICE
(2021)
Article
Ophthalmology
O. Ashton Morgan, Aftab A. Mirza, Ketan R. Parmar, Andrew J. Plowright, Jose A. Vega, Gary N. Orsborn, Carole Maldonado-Codina, John C. Whitehead, Philip B. Morgan
Summary: The purpose of this study was to compare the clinical performance and willingness to pay for toric versus spherical soft contact lenses in astigmatic individuals. The results indicated that the toric lens outperformed the spherical lens in terms of visual acuity, particularly for distance tasks. However, there were no significant differences in comfort scores. Both the clinical subjects and online respondents expressed a willingness to pay an additional fee for toric lenses, with the estimated premium ranging between 13 and 16 pounds per month.
CONTACT LENS & ANTERIOR EYE
(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
Medicine, General & Internal
Maria Villa, Francisco Cavas, David P. Pinero
Summary: This pilot study aimed to evaluate the effect of increasing corneal clearance after fitting a specific model of scleral contact lens (ScCL) on refraction and optical quality in healthy subjects. The results showed significant changes in refraction and high-order aberrations with increasing sagittal heights of ScCLs.
JOURNAL OF CLINICAL MEDICINE
(2022)
Letter
Ophthalmology
Amit Jinabhai
CLINICAL AND EXPERIMENTAL OPTOMETRY
(2016)
Article
Ophthalmology
Hema Radhakrishnan, Amit Jinabhai, Clare O'Donnell
CLINICAL AND EXPERIMENTAL OPTOMETRY
(2010)
Article
Ophthalmology
Amit Jinabhai, Clare O'Donnell, Hema Radhakrishnan
Article
Ophthalmology
Amit Jinabhai, Clare O'Donnell, Hema Radhakrishnan
CURRENT EYE RESEARCH
(2010)
Article
Ophthalmology
Amit Jinabhai, Hema Radhakrishnan, Clare O'Donnell
EYE & CONTACT LENS-SCIENCE AND CLINICAL PRACTICE
(2011)
Article
Ophthalmology
James S. Wolffsohn, Amit N. Jinabhai, Alec Kingsnorth, Amy L. Sheppard, Shehzad A. Naroo, Sunil Shah, Phillip Buckhurst, Lee A. Hall, Graeme Young
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
(2013)
Article
Ophthalmology
Amit Jinabhai, Hema Radhakrishnan, Clare O'Donnell
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2011)
Correction
Ophthalmology
Amit Jinabhai, W. Neil Charman, Clare O'Donnell, Hema Radhakrishnan
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2012)
Article
Ophthalmology
Amit Jinabhai, W. Neil Charman, Clare O'Donnell, Hema Radhakrishnan
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2012)
Article
Ophthalmology
Amit Jinabhai, Hema Radhakrishnan, Cindy Tromans, Clare O'Donnell
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2012)
Article
Ophthalmology
Amit Jinabhai, Clare O'Donnell, Cindy Tromans, Hema Radhakrishnan
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2014)
Review
Ophthalmology
Amit Jinabhai, Hema Radhakrishnan, Clare O'Donnell
CONTACT LENS & ANTERIOR EYE
(2011)
Article
Ophthalmology
Amit Jinabhai, Clare O'Donnell, Hema Radhakrishnan, Vincent Nourrit
CONTACT LENS & ANTERIOR EYE
(2012)
Review
Ophthalmology
Amit Navin Jinabhai
CLINICAL AND EXPERIMENTAL OPTOMETRY
(2020)
Article
Ophthalmology
Amit Navin Jinabhai, W. Neil Charman
Summary: This study explored the factors affecting the linear magnification of the intermediate fundus image during indirect ophthalmoscopy. The results showed that the parameters, such as the power and ametropia of the eye, and the equivalent power and position of the ophthalmoscopy lens, have significant effects on magnification. The magnification values provided by manufacturers are only approximations, and better estimates can be obtained by considering the appropriate parameter values.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2022)