Purpose: To image, describe, and characterize different features visible in the crystalline lens of older adults with and without cataract when imaged three-dimensionally with a swept-source optical coherence tomography (SS-OCT) system. Methods: We used a new SS-OCT laboratory prototype designed to enhance the visualization of the crystalline lens and imaged the entire anterior segment of both eyes in two groups of participants: patients scheduled to undergo cataract surgery, n = 17, age range 36 to 91 years old, and volunteers without visual complains, n = 14, age range 20 to 81 years old. Pre-cataract surgery patients were also clinically graded according to the Lens Opacification Classification System III. The three-dimensional location and shape of the visible opacities were compared with the clinical grading. Results: Hypo- and hyperreflective features were visible in the lens of all pre-cataract surgery patients and in some of the older adults in the volunteer group. When the clinical examination revealed cortical or subcapsular cataracts, hyperreflective features were visible either in the cortex parallel to the surfaces of the lens or in the posterior pole. Other type of opacities that appeared as hyporeflective localized features were identified in the cortex of the lens. The OCT signal in the nucleus of the crystalline lens correlated with the nuclear cataract clinical grade. Conclusions: A dedicated OCT is a useful tool to study in vivo the subtle opacities in the cataractous crystalline lens, revealing its position and size three-dimensionally. The use of these images allows obtaining more detailed information on the age-related changes leading to cataract.
Purpose: To image, describe, and characterize different features visible in the crystalline lens of older adults with and without cataract when imaged three-dimensionally with a swept-source optical coherence tomography (SS-OCT) system. Methods: We used a new SS-OCT laboratory prototype designed to enhance the visualization of the crystalline lens and imaged the entire anterior segment of both eyes in two groups of participants: patients scheduled to undergo cataract surgery, n = 17, age range 36 to 91 years old, and volunteers without visual complains, n = 14, age range 20 to 81 years old. Pre-cataract surgery patients were also clinically graded according to the Lens Opacification Classification System III. The three-dimensional location and shape of the visible opacities were compared with the clinical grading. Results: Hypo- and hyperreflective features were visible in the lens of all pre-cataract surgery patients and in some of the older adults in the volunteer group. When the clinical examination revealed cortical or subcapsular cataracts, hyperreflective features were visible either in the cortex parallel to the surfaces of the lens or in the posterior pole. Other type of opacities that appeared as hyporeflective localized features were identified in the cortex of the lens. The OCT signal in the nucleus of the crystalline lens correlated with the nuclear cataract clinical grade. Conclusions: A dedicated OCT is a useful tool to study in vivo the subtle opacities in the cataractous crystalline lens, revealing its position and size three-dimensionally. The use of these images allows obtaining more detailed information on the age-related changes leading to cataract.
Authors: Pablo Eugui; Danielle J Harper; Stefan Kummer; Antonia Lichtenegger; Johanna Gesperger; Tanja Himmel; Marco Augustin; Conrad W Merkle; Martin Glösmann; Bernhard Baumann Journal: Biomed Opt Express Date: 2020-03-19 Impact factor: 3.732
Authors: Pau Santos; Juan A Martínez-Roda; Juan C Ondategui; Fernando Díaz-Doutón; Jorge A Ortiz Cazal; Meritxell Vilaseca Journal: Biomed Opt Express Date: 2018-09-18 Impact factor: 3.732
Authors: Spozmai Panezai; Alfonso Jiménez-Villar; Alba M Paniagua Diaz; Augusto Arias; Grzegorz Gondek; Silvestre Manzanera; Pablo Artal; Ireneusz Grulkowski Journal: Biomed Opt Express Date: 2022-03-16 Impact factor: 3.562
Authors: C Vijay Reena Durai; Siddhart Rajendran; Michael A Webster; Sandeep Vempati; Shrikant R Bharadwaj Journal: Vision Res Date: 2021-07-05 Impact factor: 1.984
Authors: Ireneusz Grulkowski; Silvestre Manzanera; Lukasz Cwiklinski; Juan Mompeán; Alberto de Castro; Jose Maria Marin; Pablo Artal Journal: Biomed Opt Express Date: 2018-07-24 Impact factor: 3.732