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Terreros JP, Tello A, Galvis V, Berrospi RD, Villamizar SJ, Serrano SE. Letter Regarding: Risk of Intraocular Lens Opacification After Endothelial Keratoplasty for Different Intraocular Lens Models: A Retrospective Single-Center Cohort Study. Cornea 2024; 43:e6. [PMID: 37986197 DOI: 10.1097/ico.0000000000003436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Affiliation(s)
- Juan Pablo Terreros
- Universidad Autónoma de Bucaramanga (UNAB), School of Medicine, Department of Ophthalmology, Bucaramanga, Colombia
- Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia
| | - Alejandro Tello
- Universidad Autónoma de Bucaramanga (UNAB), School of Medicine, Department of Ophthalmology, Bucaramanga, Colombia
- Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia
- Fundación Oftalmológica de Santander FOSCAL, Department of Ophthalmology, Floridablanca, Colombia
- Universidad Industrial de Santander (UIS), School of Medicine, Department of Surgery, Bucaramanga, Colombia
| | - Virgilio Galvis
- Universidad Autónoma de Bucaramanga (UNAB), School of Medicine, Department of Ophthalmology, Bucaramanga, Colombia
- Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia
- Fundación Oftalmológica de Santander FOSCAL, Department of Ophthalmology, Floridablanca, Colombia
| | - Ruben D Berrospi
- Universidad Autónoma de Bucaramanga (UNAB), School of Medicine, Department of Ophthalmology, Bucaramanga, Colombia
- Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia
- Fundación Oftalmológica de Santander FOSCAL, Department of Ophthalmology, Floridablanca, Colombia
| | - Sylvia J Villamizar
- Universidad Autónoma de Bucaramanga (UNAB), School of Medicine, Department of Ophthalmology, Bucaramanga, Colombia
- Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia
- Fundación Oftalmológica de Santander FOSCAL, Department of Ophthalmology, Floridablanca, Colombia
| | - Sergio E Serrano
- Universidad Autónoma de Bucaramanga (UNAB), School of Medicine, Department of Ophthalmology, Bucaramanga, Colombia
- Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia
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Chen HC, Lee CY, Chang YL, Huang JY, Yang SF, Chang CK. Risk Factors for Corneal Endothelial Decompensation after Penetrating Keratoplasty: A Population-Based Cohort Study. J Clin Med 2024; 13:718. [PMID: 38337412 PMCID: PMC10856645 DOI: 10.3390/jcm13030718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
(1) Background: Endothelial decompensation is a common complication after penetrating keratopathy (PK), while the risk factors for endothelial decompensation after PK have not been fully elucidated. Consequently, we aim to investigate the possible risk factors for endothelial decompensation after PK. (2) Methods: This retrospective study was conducted using the National Health Insurance Research Database (NHIRD) of Taiwan. The main outcome was the development of endothelial decompensation after PK surgery. The effects of potential risk factors were compared between the patients with endothelial decompensation and the patients without endothelial decompensation via Cox proportional hazard regression, which produced the adjusted hazard ratio (aHR) and a 95% confidence interval (CI). (3) Results: Overall, 54 patients developed endothelial decompensation after PK surgery, with a ratio of 16.12 percent. The pre-existing type 2 diabetes mellitus (T2DM) (aHR: 1.924, 95% CI: 1.257-2.533, p = 0.0095) and history of cataract surgery (aHR: 1.687, 95% CI: 1.328-2.440, p = 0.0026) were correlated with the development of endothelial decompensation. In the subgroup analysis, the correlation between a history of cataract surgery and post-PK endothelial decompensation was more prominent in patients older than 60 years compared to their younger counterparts (p = 0.0038). (4) Conclusions: Pre-existing T2DM and a history of cataract surgery are associated with a higher incidence of post-PK endothelial decompensation.
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Affiliation(s)
- Hung-Chi Chen
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan;
- Department of Medicine, Chang Gung University College of Medicine, Taoyuan 333, Taiwan
- Center for Tissue Engineering, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Chia-Yi Lee
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
- Nobel Eye Institute, Taipei 115, Taiwan
- Department of Ophthalmology, Jen-Ai Hospital Dali Branch, Taichung 412, Taiwan
| | - Yu-Ling Chang
- Department of Medical Education, Cathay General Hospital, Taipei 106, Taiwan
| | - Jing-Yang Huang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 402, Taiwan
| | - Chao-Kai Chang
- Nobel Eye Institute, Taipei 115, Taiwan
- Department of Optometry, Da-Yeh University, Chunghua 515, Taiwan
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Okumura N, Nishikawa T, Imafuku C, Matsuoka Y, Miyawaki Y, Kadowaki S, Nakahara M, Matsuoka Y, Koizumi N. U-Net Convolutional Neural Network for Real-Time Prediction of the Number of Cultured Corneal Endothelial Cells for Cellular Therapy. Bioengineering (Basel) 2024; 11:71. [PMID: 38247948 PMCID: PMC10813389 DOI: 10.3390/bioengineering11010071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/08/2024] [Indexed: 01/23/2024] Open
Abstract
Corneal endothelial decompensation is treated by the corneal transplantation of donor corneas, but donor shortages and other problems associated with corneal transplantation have prompted investigations into tissue engineering therapies. For clinical use, cells used in tissue engineering must undergo strict quality control to ensure their safety and efficacy. In addition, efficient cell manufacturing processes are needed to make cell therapy a sustainable standard procedure with an acceptable economic burden. In this study, we obtained 3098 phase contrast images of cultured human corneal endothelial cells (HCECs). We labeled the images using semi-supervised learning and then trained a model that predicted the cell centers with a precision of 95.1%, a recall of 92.3%, and an F-value of 93.4%. The cell density calculated by the model showed a very strong correlation with the ground truth (Pearson's correlation coefficient = 0.97, p value = 8.10 × 10-52). The total cell numbers calculated by our model based on phase contrast images were close to the numbers calculated using a hemocytometer through passages 1 to 4. Our findings confirm the feasibility of using artificial intelligence-assisted quality control assessments in the field of regenerative medicine.
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Affiliation(s)
- Naoki Okumura
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
| | - Takeru Nishikawa
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
| | - Chiaki Imafuku
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
| | - Yuki Matsuoka
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
| | - Yuna Miyawaki
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
| | - Shinichi Kadowaki
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
| | - Makiko Nakahara
- ActualEyes Inc., D-egg, 1 Jizodani, Koudo, Kyotanabe-City 610-0332, Kyoto, Japan; (M.N.); (Y.M.)
| | - Yasushi Matsuoka
- ActualEyes Inc., D-egg, 1 Jizodani, Koudo, Kyotanabe-City 610-0332, Kyoto, Japan; (M.N.); (Y.M.)
| | - Noriko Koizumi
- Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, 1-3 Miyakodani, Tatara, Kyotanabe-City 610-0394, Kyoto, Japan; (T.N.); (Y.M.); (Y.M.); (S.K.); (N.K.)
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Indications and techniques of corneal transplants performed in one center in Southern Poland, in the years 2001–2020. PLoS One 2022; 17:e0276084. [DOI: 10.1371/journal.pone.0276084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 09/28/2022] [Indexed: 11/19/2022] Open
Abstract
Purpose
The study aimed to evaluate changes over a period of time in techniques and indications for corneal transplantation in a single center in Poland.
Methods
Retrospective analysis of corneal transplants performed at the Ophthalmology Department of the District Railway Hospital in Katowice in 2001–2020. Data on indications and surgical technique were collected.
Results
A total of 3021 corneal transplantations were performed in the years 2000–2020. The most common technique was penetrating keratoplasty (69,54%), then lamellar grafts—both anterior and posterior (19,63%), and limbal grafts (10,82%). Only in 2007 the number of lamellar keratoplasties exceeded the number of penetrating grafts and accounted for 108 (54,55%), including 85 (42,93%) of Descemet Stripping Automated Endothelial Keratoplasty. The only noticeable trend in changing techniques was a decrease in the number of performed deep anterior lamellar keratoplasties (r 2 = -0.21) over the last seven years. Main indications included bullous keratopathy (23,22%), following keratoconus (18,59%), leukoma (14,67%), keratitis and perforation (14,3%), Fuchs dystrophy (11,4%), and regrafts (7,22%). Leukoma and bullous keratopathy as an indications for corneal transplant have been declining over the years (r2 = 0.60 and r2 = 0.30 respectively). Consecutively, indications such as fuchs dystrophy, regraft and keratitis perforation have increased (r2 = 0.05, r2 = 0.50, r2 = 0.33)
Conclusions
The number of keratoplasties gradually increased from 2001 to 2020. It could be possible that the development and spread of new therapeutic alternatives, like corneal cross-linking and scleral lenses, have contributed to the decrease in deep anterior lamellar keratoplasty performed. There was an increasing trend in the percentage of penetrating keratoplasties for failed grafts, Fuchs dystrophy and infectious keratitis.
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Kobayashi A, Yokogawa H, Mori N, Nishino T, Sugiyama K. Graft Edge Reflection of a Tightly Scrolled Roll Using Endoillumination as a Simple Method for Determining Graft Orientation in Descemet Membrane Endothelial Keratoplasty. Cornea 2021; 40:254-257. [PMID: 32826645 DOI: 10.1097/ico.0000000000002459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 06/09/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE To describe a simple finding that can be used to determine donor tissue orientation in Descemet membrane endothelial keratoplasty (DMEK). This involves the appearance of a highly reflective round curved line from an overlapping graft edge within the anterior chamber using light from an endoilluminator. We here name this Kobayashi sign (K-sign). METHODS Twelve consecutive eyes from 12 patients who underwent DMEK were evaluated for the presence of a K-sign. The presence of Berrospi sign (B-sign), a double-line reflection from the peripheral curls of the Descemet membrane (DM) roll that has been reported to be useful for correct graft orientation, was also evaluated. RESULTS Of 12 cases, 3 donors showed a loosely scrolled roll soon after DM donor insertion; all 3 of these showed a positive B-sign only when the endoilluminator was used. Nine donors showed a tightly scrolled DM roll without a B-sign; among these 9 donors, a K-sign was visible in 7 cases only when the endoilluminator was used. The remaining 2 cases with a tight scroll configuration showed no K-sign even with the use of endoillumination, indicating that the roll edge was located completely downward; rotation of the roll using a small jet of fluid from paracentesis revealed K-sign in these cases. CONCLUSIONS This technique is useful for determining the correct orientation of a tightly scrolled DM roll, subsequently enabling rapid DMEK surgery. For loosely scrolled DM roll, endoillumination enhanced B-sing is proven useful.
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Affiliation(s)
- Akira Kobayashi
- Department of Ophthalmology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
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Ramirez DA, Schmidt GA, Worthington KS, Sales CS. Review: Optimizing DMEK Technique, 2018-2020. Int Ophthalmol Clin 2021; 61:45-55. [PMID: 33337793 DOI: 10.1097/iio.0000000000000340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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