Article
Ophthalmology
Micael Alves, Elisabete M. S. Castanheira, Madalena Lira
Summary: The study found that contact lens materials and lens care solutions underwent mutual changes after storage, likely linked to biochemical and biophysical interactions between components and the release of some polymer compounds. These findings offer valuable insights into the interaction between CL materials and LCS in clinical settings.
CONTACT LENS & ANTERIOR EYE
(2021)
Article
Chemistry, Physical
V. Chandran Suja, A. Verma, E. J. L. Mossige, K. W. Cui, V. Xia, Y. Zhang, D. Sinha, S. Joslin, G. G. Fuller
Summary: By studying the mechanisms of wetting agents on tear film stability, we found that zwitterionic wetting agents can effectively stabilize the tear film, and adjusting the surface concentration and mixture ratio of wetting agents can enhance their wetting characteristics. Furthermore, we confirmed the significance of minimizing the contact angle and contact angle hysteresis for wetting performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Ophthalmology
Diego Garcia-Ayuso, Esmeralda Moya-Rodriguez, Francisco J. Valiente-Soriano, Caridad Galindo-Romero, Paloma Sobrado-Calvo, Johnny Di Pierdomenico
Summary: This study assessed the level of compliance related to contact lens wear among university students in Spain. The results showed that a relatively high percentage of participants displayed some degree of non-compliance with contact lens care and wearing time. The study emphasized the importance of providing accurate and comprehensive contact lens care guidelines and attending follow-up visits.
CONTACT LENS & ANTERIOR EYE
(2022)
Review
Ophthalmology
Alan Yee, Karen Walsh, Marc Schulze, Lyndon Jones
Summary: Reusable soft contact lenses continue to be popular among wearers, but the additional steps required for cleaning and disinfecting may lead to non-compliant behavior and potentially impact wearers' health. Educating patients, regulating the use of contact lens care solutions, and reevaluating global standards are key strategies to better support contact lens wearers.
CONTACT LENS & ANTERIOR EYE
(2021)
Article
Chemistry, Multidisciplinary
Ahmed E. Salih, Mohamed Elsherif, Fahad Alam, Ali K. Yetisen, Haider Butt
Summary: Color vision deficiency affects a percentage of males and females, red-green color blindness being the most common form. Wearables like tinted glasses are commonly used to enhance color perception for CVD patients. This study introduces nanocomposite contact lenses with gold nanoparticles, showing superior optical and material properties compared to commercially available contact lenses for vision correction.
Article
Materials Science, Multidisciplinary
Mohamed Elsherif, Ahmed E. Salih, Ali K. Yetisen, Haider Butt
Summary: This study developed new contact lenses that assist color-blind individuals by immobilizing two specific dyes to block undesired light and enhance color visibility. The proposed contact lenses showed better outcomes in improving color vision performance compared to commercial color-blind glasses.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Microbiology
Marcin Padzik, Lidia Chomicz, Julita Bluszcz, Karolina Maleszewska, Jaroslaw Grobelny, David Bruce Conn, Edyta B. Hendiger
Summary: Acanthamoeba spp. can cause Acanthamoeba keratitis, particularly in contact lens wearers. It has been found that silver nanoparticles combined with tannic acid-modified contact lens solutions can enhance their anti-adhesion activity with low cytotoxicity.
Article
Ophthalmology
Lyndon Jones, Nathan Efron, Kalika Bandamwar, Melissa Barnett, Deborah S. Jacobs, Isabelle Jalbert, Heiko Pult, Michelle K. Rhee, Heather Sheardown, Joseph P. Shovlin, Ulli Stahl, Adriana Stanila, Jacqueline Tan, Silvia Tavazzi, Omur O. Ucakhan, Mark D. P. Willcox, Laura E. Downie
Summary: The lifestyle choices of contact lens wearers can have negative impacts on eye health, such as poor adherence to care, sleeping in lenses, inappropriate purchases, lack of regular aftercare visits, wearing lenses while feeling unwell, wearing lenses too soon after surgery, and wearing lenses during risky behaviors. However, contact lenses can also provide therapeutic benefits. The COVID-19 pandemic introduced new challenges for contact lens wearers, including mask-associated dry eye, increased discomfort from digital device use, accidental exposure to hand sanitizers, and reduced lens usage.
Article
Optics
Valeriia Bobkova, Sarah Trinschek, Eileen Otte, Cornelia Denz
Summary: This study proposes a light-shaping approach using liquid droplets as lenses to reveal the characteristics of droplets and underlying surfaces. By analyzing the structured light field generated by the droplet lenses, this method can explore typically invisible droplet properties and enhance tools for droplet and surface investigation.
Review
Biochemistry & Molecular Biology
Wan-Hsin Chang, Pei-Yi Liu, Min-Hsuan Lin, Chien-Ju Lu, Hsuan-Yi Chou, Chih-Yu Nian, Yuan-Ting Jiang, Yuan-Hao Howard Hsu
Summary: Hyaluronic acid (HA) is commonly used in ophthalmology for its biological safety and water retention properties. It is often utilized in intravitreal injections, dry eye treatment, and contact lenses. HA in contact lenses can improve wearer comfort and gradually release to the eyes to treat dry eye.
Review
Automation & Control Systems
Xin Ma, Samad Ahadian, Song Liu, Jingwen Zhang, Shengnan Liu, Teng Cao, Wenbin Lin, Dong Wu, Natan Roberto de Barros, Mohammad Reza Zare, Sibel Emir Diltemiz, Vadim Jucaud, Yangzhi Zhu, Shiming Zhang, Ethan Banton, Yue Gu, Kewang Nan, Sheng Xu, Mehmet Remzi Dokmeci, Ali Khademhosseini
Summary: Smart contact lenses with multifunctional biosensing capabilities and highly integrated performance provide a great platform for eye disease diagnosis and drug delivery. Biosensors in contact lenses measure key metabolites, and drug delivery through contact lenses can be beneficial.
ADVANCED INTELLIGENT SYSTEMS
(2021)
Article
Engineering, Biomedical
L. Vilhena, A. Ramalho
Summary: This research aims to evaluate the impact of aging on the friction of contact lenses (CL) and identify the material modifications that may cause variations in the friction coefficient post-aging. A simulated aging process was conducted to replicate the effects of transition between closed and open eyes and exposure to environmental aggressions, such as ultraviolet radiation, which are the main factors influencing CL material surface. The friction and stiffness of the CL were characterized before and after the aging process, showing an increase in both parameters for all types of contact lenses. Hydrogel lenses were least affected by aging, while silicone-hydrogel lenses based on delefilcon A exhibited the least stability of properties.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Mateusz Godyn, Michal Kedziora, Yingying Ren, Yongxin Liu, Houbing Herbert Song
Summary: This paper aims to analyze the state-of-the-art solutions for permissioned blockchain compliance with GDPR, including implementing one of the methods and proposing a new solution. Through studying the impact of GDPR on existing blockchain databases and the necessity of introducing data structure mutability to comply with the right to be forgotten, the paper discusses both technical and regulatory research. In the experiment, the Reference-based Tree Structure (RBTS) is researched, implemented, and performance tests are conducted. The proposed solution is efficient, easily reproducible, and allows for quick deletion of unwanted content with the consent of the personal data owner, eliminating the need for dependency on other blockchain network participants.
SCIENTIFIC REPORTS
(2022)
Article
Mechanics
I Sevostianov, M. Kachanov
Summary: This study examines the incremental normal compliance of an irregular contact between two elastic half spaces, modeling the contact as an external crack. By utilizing an approximate expression for stress intensity factor and Rice's theorem, the crack compliance is evaluated. The results are applicable to a wide range of contact shapes and include the formulation of bounds similar to Hill's comparison theorem. Additionally, the study explores the relationship between elasticity and conductivity in contact conductance.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Materials Science, Biomaterials
Muhammed Hisham, Ahmed E. E. Salih, Haider Butt
Summary: 3D printing of multimaterial objects is a promising field with various applications. In this study, multimaterial contact lenses were produced using vat photopolymerization-based 3D printing, offering enhanced optical filtration for tackling ocular conditions like color blindness.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)