Article
Ophthalmology
Xoana Barcala, Maria Vinas, Sofia Ruiz, Fernando Hidalgo, Derek Nankivil, Tom Karkkainen, Enrique Gambra, Carlos Dorronsoro, Susana Marcos
Summary: This study compared the binocular visual perception of participants wearing multifocal contact lenses with simulated lenses and found that both actual and simulated lenses increased depth-of-focus similarly. The simultaneous vision simulator accurately represented vision with multifocal contact lenses in terms of visual acuity at various distances and perceived visual quality.
CONTACT LENS & ANTERIOR EYE
(2022)
Article
Ophthalmology
Erin M. Rueff, Lisa A. Jones-Jordan, Melissa D. Bailey
Summary: Younger contact lens wearers tend to prefer single vision lenses, while older wearers have similar experiences with both single vision and multifocal lenses. Some uncomfortable contact lens wearers approaching 40 years old may benefit from wearing a multifocal contact lens earlier in life.
OPHTHALMIC AND PHYSIOLOGICAL OPTICS
(2021)
Review
Ophthalmology
Erin M. Rueff
Summary: The purpose of this manuscript is to review the evidence supporting the hypothesis that contact lens discomfort can be caused by vision and vision-related disorders. The paper explores how these disorders may influence comfort in contact lens wearers and highlights the importance of acknowledging the role of vision in contact lens discomfort for future research and clinical management.
CONTACT LENS & ANTERIOR EYE
(2023)
Article
Ophthalmology
Kazutaka Kamiya, Kei Iijima, Takahiro Hiraoka, Keita Takada, Yosai Mori, Kazunori Miyata
Summary: The study compared visual performance and patient satisfaction in eyes implanted with multifocal intraocular lenses (IOLs) and eyes wearing multifocal contact lenses (CLs) undergoing monofocal IOL implantation. Results showed significant differences in visual acuity at all distances between the two groups, but no significant differences in overall vision satisfaction and rate of spectacle independence.
OPHTHALMOLOGY AND THERAPY
(2021)
Article
Ophthalmology
Maria S. S. Millan, Laura Clave, Aurora Torrents, Jesus Armengol, Fidel Vega
Summary: This study aimed to detect alterations in the spatio-chromatic vision of pseudophakics produced by multifocal diffractive intraocular lenses (IOLs) and provide a physical interpretation. The imaging performance of two diffractive IOLs was characterized in an on-bench model eye, and metrics such as energy efficiency, modulation transfer function, longitudinal chromatic aberration, and halo intensity were used. Clinical experiments and assessments of visual acuity were conducted to evaluate the effects of LCA and R, G, B TF-EE on pseudophakic vision.
Article
Ophthalmology
Irene Martinez-Alberquilla, Maria Garcia-Montero, Javier Ruiz-Alcocer, Almudena Crooke, David Madrid-Costa
Summary: After 15 days of wear, two contact lenses for presbyopia, one with extended depth-of focus design and one conventional multifocal lens, showed similar visual quality, preserved ocular surface integrity, and resulted in similar levels of dry eye symptoms for the patients.
CONTACT LENS & ANTERIOR EYE
(2021)
Article
Optics
Mareddi Bharath Kumar, Daekyung Kang, Mohammad Awwal Adeshina, Soobae Kim, Taewan Kim, Jonghoo Park
Summary: The electro-optic diffractive multifocal lens combines multiple focal points and can correct complex visual problems through electrical switching without compromising the field of view, providing new possibilities for ophthalmic applications.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Yannick Sauer, Malte Scherff, Markus Lappe, Katharina Rifai, Niklas Stein, Siegfried Wahl
Summary: Progressive addition lenses (PALs) are eyeglasses used to correct presbyopia and improve vision, but they may distort the wearer's peripheral vision and result in illusions of self-motion. A study found that when looking through the periphery of the lens, participants experienced upward deviations of self-motion, while there was no such effect when looking through the center of the lens.
Article
Medicine, General & Internal
Naris Kitnarong, Sakaorat Petchyim, Pennapar Jampathong, Isaraporn Treesit, Arnan Limmahachai, Tanakorn Aurboonsong
Summary: This study aimed to determine the effect of presbyopic corrective lens (PC) on Humphrey visual field (HVF) testing in patients with multifocal intraocular lenses (MIOL). The results showed that patients with MIOL do not require PC during HVF testing.
Article
Optics
Sergio Barbero
Summary: This article presents a new mathematical method to uniquely construct multi-focal wavefronts from mean curvature functions under certain numerically justified approximations and restrictions. The method leads to a particular family of wavefronts and provides examples of multifocal wavefronts belonging to this family.
Proceedings Paper
Engineering, Electrical & Electronic
Ben Cvarch, Jim Schwiegerling
Summary: A system has been developed to simulate the image quality and dysphotopsia of multifocal lenses. This simulation combines High Dynamic Range (HDR) images and lens design to accurately predict the appearance of dysphotopsia for patients. Dysphotopsia is the most common complaint after successful cataract surgery and has a documented impact on the image quality of multifocal lenses. Accurate simulations of dysphotopsia can help set proper patient expectations and potentially aid in diagnosing patient problems.
CURRENT DEVELOPMENTS IN LENS DESIGN AND OPTICAL ENGINEERING XXIII
(2022)
Article
Ophthalmology
Shehzad A. Naroo, Manbir Nagra, Neil Retallic
Summary: Contact lenses are a good option for presbyopia patients, but multifocal lenses have low penetration in the market. A questionnaire survey of people over 40 revealed that some older patients drop out of contact lenses due to discomfort, dry eye issues, and poor visual performance. Patients may seek suggestions and recommendations from eye care practitioners for better management.
CONTACT LENS & ANTERIOR EYE
(2022)
Article
Ophthalmology
Sotiris Plainis, Emmanouil Ktistakis, Miltiadis K. Tsilimbaris
Summary: This study evaluated the effectiveness of presbyopia correction with multifocal contact lenses using an eye-fixation based method of silent reading performance. The results showed that using multifocal contact lenses significantly improved the reading speed and eye fixation ability of presbyopic patients. Therefore, evaluating reading performance using eye fixation analysis can provide reliable outcomes for presbyopia correction.
CONTACT LENS & ANTERIOR EYE
(2023)
Article
Physics, Applied
James Bailey, John Clamp, Steven Farmer, Helen F. Gleeson, Tim Haynes, J. Cliff Jones, Tom Moorhouse, Philip Morgan
Summary: A switchable contact lens prototype with the ability to change focal power was developed for the treatment of presbyopia. The lens was fabricated using off the shelf electronic components and a liquid crystal active lens element. The prototype demonstrated the first battery-powered and wirelessly triggered smart contact lens for the treatment of presbyopia.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Polymer Science
Huidong Wei, James S. Wolffsohn, Otavio Gomes de Oliveira, Leon N. Davies
Summary: Presbyopia is a common eye disorder in aged people, caused by the stiffening of the crystalline lens. One potential technique to correct presbyopia involves replacing the lens substance with an artificial lens. The development of devices like accommodating intraocular lenses relies on understanding the biomechanical behavior of the lens capsule and design verification. Mimicking the eye's dynamic focusing ability, an artificial lens capsule made from silicone rubber and a lens radial stretching system were developed to address the biomechanical function of the ALC. Initial tests on ophthalmic devices prototypes have shown promising results in restoring accommodation.
Article
Ophthalmology
Maria Garcia-Montero, Laura Rico-del-Viejo, Clara Llorens-Quintana, Amalia Lorente-Velazquez, Jose Luis Hernandez-Verdejo, David Madrid-Costa
CONTACT LENS & ANTERIOR EYE
(2019)
Article
Ophthalmology
Luis Fernandez-Vega-Cueto, Carlos Lisa, Aranzazu Poo-Lopez, Jose F. Alfonso, David Madrid-Costa
EUROPEAN JOURNAL OF OPHTHALMOLOGY
(2020)
Article
Ophthalmology
Jose F. Alfonso, Luis Fernandez-Vega-Cueto, Carlos Lisa, Tiago Monteiro, David Madrid-Costa
Article
Ophthalmology
Laura Rico-del-Viejo, Jose Manuel Benitez-del-Castillo, Fernando Javier Gomez-Sanz, Maria Garcia-Montero, Clara Llorens-Quintana, David Madrid-Costa
CONTACT LENS & ANTERIOR EYE
(2019)
Article
Ophthalmology
Tiago Monteiro, Jose F. Alfonso, Nuno Franqueira, Fernando Faria-Correira, Renato Ambrosio Jr, David Madrid-Costa
EUROPEAN JOURNAL OF OPHTHALMOLOGY
(2020)
Article
Ophthalmology
Clara Llorens-Quintana, Laura Rico-del-Viejo, Piotr Syga, David Madrid-Costa, D. Robert Iskander
TRANSLATIONAL VISION SCIENCE & TECHNOLOGY
(2019)
Article
Ophthalmology
Javier Ruiz-Alcocer, Amalia Lorente-Velazquez, Jose Luis Hernandez-Verdejo, Pablo De Gracia, David Madrid-Costa
JOURNAL OF REFRACTIVE SURGERY
(2020)
Article
Medicine, General & Internal
Belen Alfonso-Bartolozzi, Carlos Lisa, Luis Fernandez-Vega-Cueto, David Madrid-Costa, Jose F. Alfonso
Summary: The study evaluated the outcomes of implanting Neoring in PD-DALK procedure for moderate-advanced keratoconus, showing improved visual acuity and corneal conditions post-operatively. It suggests that Neoring implantation is a safe and effective option for patients with moderate-severe keratoconus to optimize post-operative results.
FRONTIERS IN MEDICINE
(2021)
Article
Ophthalmology
Luis Fernandez-Vega-Cueto, David Madrid-Costa, Belen Alfonso-Bartolozzi, Fidel Vega, Maria S. Millan, Jose F. Alfonso
Summary: The AcrySof IQ Vivity IOL demonstrated good optical quality and extended range of focus in this study. The clinical outcomes showed satisfactory visual acuity, although the halo formed by this IOL was more intense compared to a monofocal IOL.
JOURNAL OF REFRACTIVE SURGERY
(2022)
Article
Chemistry, Multidisciplinary
Laura Rico-del-Viejo, Clara Llorens-Quintana, Irene Martinez-Alberquilla, David Madrid-Costa, Maria Garcia-Montero
Summary: This study analyzed the variations in ocular surface temperature (OST) using infrared thermography in dry eye disease (DED) and control eyes. The results showed that there were no significant differences between DED and control eyes under natural non-controlled blinking conditions. However, the presence of clinical signs in the control group may affect the results, highlighting the importance of DED diagnosis criteria.
APPLIED SCIENCES-BASEL
(2022)
Article
Ophthalmology
Lucia Ibares-Frias, Luis Fernandez-Vega-Cueto, Belen Alfonso-Bartolozzi, Aranzazu Poo-Lopez, David Madrid-Costa, Jose F. Alfonso
Summary: This study evaluated the outcomes of implanting a 150 degrees arc-length intrastromal corneal ring segment (ICRS) in patients with post-LASIK ectasia. The results showed that the procedure was safe, effective, and stable, leading to visual restoration in these patients.
CURRENT EYE RESEARCH
(2023)
Article
Ophthalmology
Jose F. Alfonso, Luis Fernandez-Vega-Cueto, Carlos Lisa, Belen Alfonso-Bartolozzi, Ana Palacios, David Madrid-Costa
Summary: This study assessed the clinical and aberrometric outcomes of a new Implantable Collamer Lens (ICL) for moderate to high myopia and presbyopia correction. The results suggest that the new ICL may be a good alternative for patients aged between 45 and 55 years, but further studies are needed to evaluate the threshold lens misalignment that could affect patients' visual quality.
JOURNAL OF REFRACTIVE SURGERY
(2023)
Article
Ophthalmology
David Madrid-Costa, Luis Fernandez-Vega-Cueto, Juan A. Azor-Moron, Fidel Vega, Maria S. Millan, Jose F. Alfonso
Summary: By evaluating the optical quality and halo formation of a beam-shaping extended depth-of-focus intraocular lens under conditions similar to low to moderate myopic ablation, it was found that the lens provided good distance optical performance and an extended range of focus. However, in the case of high myopic ablation, it resulted in a larger and more intense halo.
JOURNAL OF REFRACTIVE SURGERY
(2023)
Review
Ophthalmology
Belen Alfonso-Bartolozzi, Irene Martinez-Alberquilla, Begona Baamonde, Luis Fernandez-Vega-Cueto, Jose F. Alfonso, David Madrid-Costa
Summary: This review presents different surgical procedures for correcting residual refractive errors following deep anterior lamellar keratoplasty (DALK). It highlights that residual ametropias, such as high astigmatism and myopia, can limit visual restoration and impact patients' quality of vision and life. Various refractive surgery techniques have shown effectiveness and safety in correcting ametropia following DALK, but further research is needed to confirm long-term results.
INTERNATIONAL OPHTHALMOLOGY
(2023)
Article
Medicine, General & Internal
Belen Alfonso-Bartolozzi, Carlos Lisa, Luis Fernandez-Vega-Cueto, David Madrid-Costa, Jose F. Alfonso
Summary: This study evaluated the long-term outcomes of Femto-LASIK for correcting residual astigmatism after DALK. The results showed that Femto-LASIK is a safe and effective procedure for correcting residual astigmatism, with the majority of cases maintaining stability during the follow-up period.
MEDICINA-LITHUANIA
(2022)