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Paper Abstract and Keywords
Presentation 2024-01-19 11:30
Association of Nuclear Cataract with UV and Heat Exposure to Lens Based on Large-Scale Physics Computation
Kotaro Kinoshita, Sachiko Kodera (NITech), Natsuko Hatsusaka (KMU), Ryusuke Egawa (TDU), Hiroyuki Takizawa (TU), Eri Kubo, Hiroshi Sasaki (KMU), Akimasa Hirata (NITech) EMCJ2023-92
Abstract (in Japanese) (See Japanese page) 
(in English) Epidemiological studies have reported that the prevalence of nuclear cataracts increase with age, especially in tropical and subtropical countries. Ultraviolet irradiation and ambient temperature are suggested as essential environmental contributors, although their quantification is difficult. The aim of this study is to investigate the association of the prevalence of nuclear cataracts with ultraviolet irradiation and heat load. First, we estimated the lens temperature using ambient temperature and relative humidity in the target cities based on large-scale physical computation considering the difference in thermophysiological response due to age and birthplace. We then proposed two metrics for the ultraviolet irradiation and heat load in the ocular region accumulated during lifetime based on weather data and computed lens temperature, while considering the age-dependent decline in lens repair capacity. We also evaluated the effects of ultraviolet irradiation and heat on nuclear cataract using multivariate linear regression analysis. As a result, heat load (CEM43C) significantly contributed to the prevalence at 52%, surpassing the contributions of ultraviolet irradiation (31%) and the decline in lens repair capacity (17%), which suggested heat load is more associated with nuclear cataract.
Keyword (in Japanese) (See Japanese page) 
(in English) Nuclear Cataract / Thermoregulation / UV Irradiation / Heat Exposure / Lens Repair Capacity / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 346, EMCJ2023-92, pp. 27-32, Jan. 2024.
Paper # EMCJ2023-92 
Date of Issue 2024-01-12 (EMCJ) 
ISSN Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ  
Conference Date 2024-01-19 - 2024-01-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2024-01-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Association of Nuclear Cataract with UV and Heat Exposure to Lens Based on Large-Scale Physics Computation 
Sub Title (in English)  
Keyword(1) Nuclear Cataract  
Keyword(2) Thermoregulation  
Keyword(3) UV Irradiation  
Keyword(4) Heat Exposure  
Keyword(5) Lens Repair Capacity  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kotaro Kinoshita  
1st Author's Affiliation Nagoya Institute of Technology (NITech)
2nd Author's Name Sachiko Kodera  
2nd Author's Affiliation Nagoya Institute of Technology (NITech)
3rd Author's Name Natsuko Hatsusaka  
3rd Author's Affiliation Kanazawa Medical University (KMU)
4th Author's Name Ryusuke Egawa  
4th Author's Affiliation Tokyo Denki University (TDU)
5th Author's Name Hiroyuki Takizawa  
5th Author's Affiliation Tohuku University (TU)
6th Author's Name Eri Kubo  
6th Author's Affiliation Kanazawa Medical University (KMU)
7th Author's Name Hiroshi Sasaki  
7th Author's Affiliation Kanazawa Medical University (KMU)
8th Author's Name Akimasa Hirata  
8th Author's Affiliation Nagoya Institute of Technology (NITech)
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Speaker Author-1 
Date Time 2024-01-19 11:30:00 
Presentation Time 20 minutes 
Registration for EMCJ 
Paper # EMCJ2023-92 
Volume (vol) vol.123 
Number (no) no.346 
Page pp.27-32 
#Pages 6 
Date of Issue 2024-01-12 (EMCJ) 

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