Age-related cataract is an ever-increasing health problem among the elderly population worldwide. In recent years, there has been speculation that the levels of micronutrients in ocular tissue may play a role in the pathogenesis of cataract, especially zinc, since it is found in high concentrations in the eye tissues, including the aqueous humor. 44 subjects diagnosed with cataract were chosen for study and matched with 21 healthy controls to determine the concentration of zinc in aqueous humor. The findings revealed that a significantly higher concentration of zinc was present in the aqueous humor of our study population compared to controls (p < 0.001). These findings, in agreement with several previous studies, amplify the need for further investigation to determine if these higher levels are in actuality a consequence of the disease or a factor in the formation of cataract.
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http://dx.doi.org/10.1159/000089565 | DOI Listing |
Sci Rep
January 2025
Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.
To describe the management and clinical course of 12 cases of pseudophakic aqueous misdirection syndrome (AMS). Twelve eyes of 12 Patients diagnosed with pseudophakic AMS between 2021 and 2022 were included. Best-corrected visual acuity, refraction, intraocular pressure (IOP), anti-glaucomatous medication, spectral domain ocular coherence tomography (SD-OCT) and postoperative complications were evaluated.
View Article and Find Full Text PDFGraefes Arch Clin Exp Ophthalmol
January 2025
Hospital Universitario de La Princesa, C/Diego de Leon, 62, 28006, Madrid, Spain.
Purpose: To compare iridian Swept-Source Anterior Segment OCT (SS-AS-OCT) and microbiological features in Aqueous Humor (AH) in patients with Fuchs Uveitis Syndrome (FUS) and Posner-Schlossman Syndrome (PSS).
Methods: Comparative, retrospective-prospective single center study examining 131 eyes from 66 patients, including 33 eyes with PSS, 37 eyes with FUS, and 61 healthy eyes. AH samples were collected from affected eyes in all patients.
Invest Ophthalmol Vis Sci
January 2025
Singapore Eye Research Institute, Singapore.
Purpose: To investigate the aqueous proteomics and metabolomics in low-energy and high-energy femtosecond laser-assisted cataract surgery (FLACS).
Methods: In this prospective observational study, 72 patients were randomized to 3 groups: low-energy FLACS, high-energy FLACS, and conventional phacoemulsification (controls). Aqueous was collected after femtosecond laser treatment or at the beginning of surgery (controls).
Invest Ophthalmol Vis Sci
January 2025
Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, United States.
Purpose: Aqueous humor inflow rate, a key parameter influencing aqueous humor dynamics, is typically measured by fluorophotometry. Analyzing fluorophotometric data depends, inter alia, on the volume of aqueous humor in the anterior chamber but not the posterior chamber. Previous fluorophotometric studies of the aqueous inflow rate in mice have assumed the ratio of anterior:posterior volumes in mice to be similar to those in humans.
View Article and Find Full Text PDFPharmaceutics
November 2024
Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, No. 280 University Town Outer Ring East Road, Guangzhou 510006, China.
Background: Internal ocular diseases, such as macular edema, uveitis, and diabetic macular edema require precise delivery of therapeutic agents to specific regions within the eye. However, the eye's complex anatomical structure and physiological barriers present significant challenges to drug penetration and distribution. Traditional eye drops suffer from low bioavailability primarily due to rapid clearance mechanisms.
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