Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes
(1) Background: We investigated the behavior of gas inside a lens and its influence on the lens capsule, which may cause complications by lens irradiation with a femtosecond laser cataract surgery device. (2) Methods: The crystalline lenses of 6-month-old porcine cadaver eyes were observed during la...
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MDPI AG
2021-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/17/8247 |
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| author | Yoichiro Masuda Kotaro Oki Akira Watanabe Makiko Ohkido Hisaharu Iwaki Takuya Shiba Tadashi Nakano |
| author_facet | Yoichiro Masuda Kotaro Oki Akira Watanabe Makiko Ohkido Hisaharu Iwaki Takuya Shiba Tadashi Nakano |
| author_sort | Yoichiro Masuda |
| collection | DOAJ |
| description | (1) Background: We investigated the behavior of gas inside a lens and its influence on the lens capsule, which may cause complications by lens irradiation with a femtosecond laser cataract surgery device. (2) Methods: The crystalline lenses of 6-month-old porcine cadaver eyes were observed during laser irradiation. An intraocular endoscope in the vitreous cavity was used to measure the posterior capsule position. Optical coherence tomography measurements of the anterior chamber depth before and after the laser irradiation, as well as measurements of the equatorial perimeter of the extracted lens, were compared with those of the controls. (3) Results: Femtosecond laser-generated gas in the porcine lens was dependent on laser irradiation energy. Increases in the amount of laser irradiation energy caused the generated gas to coalesce, move backwards beyond the laser irradiation site, and expand the lens capsule and posterior capsule. (4) Conclusions: The present results suggest that laser irradiation-induced gas moves in the direction of the posterior capsule beyond the lens irradiation site and expands the lens capsule, which may be involved in the development of capsular block syndrome. |
| first_indexed | 2024-03-10T08:15:15Z |
| format | Article |
| id | doaj.art-00a84c5715234d78894ede966bb9d2d9 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T08:15:15Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-00a84c5715234d78894ede966bb9d2d92023-11-22T10:23:56ZengMDPI AGApplied Sciences2076-34172021-09-011117824710.3390/app11178247Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver EyesYoichiro Masuda0Kotaro Oki1Akira Watanabe2Makiko Ohkido3Hisaharu Iwaki4Takuya Shiba5Tadashi Nakano6Department of Ophthalmology, School of Medicine, The Jikei University, Tokyo 105-8461, JapanOki Eye Surgery Center, Tokyo 171-0014, JapanDepartment of Ophthalmology, School of Medicine, The Jikei University, Tokyo 105-8461, JapanDepartment of Molecular Biology, School of Medicine, The Jikei University, Tokyo 105-8461, JapanIwaki Eye Clinic, Tokyo 131-0032, JapanRoppongi Shiba Eye Clinic, Tokyo 106-0032, JapanDepartment of Ophthalmology, School of Medicine, The Jikei University, Tokyo 105-8461, Japan(1) Background: We investigated the behavior of gas inside a lens and its influence on the lens capsule, which may cause complications by lens irradiation with a femtosecond laser cataract surgery device. (2) Methods: The crystalline lenses of 6-month-old porcine cadaver eyes were observed during laser irradiation. An intraocular endoscope in the vitreous cavity was used to measure the posterior capsule position. Optical coherence tomography measurements of the anterior chamber depth before and after the laser irradiation, as well as measurements of the equatorial perimeter of the extracted lens, were compared with those of the controls. (3) Results: Femtosecond laser-generated gas in the porcine lens was dependent on laser irradiation energy. Increases in the amount of laser irradiation energy caused the generated gas to coalesce, move backwards beyond the laser irradiation site, and expand the lens capsule and posterior capsule. (4) Conclusions: The present results suggest that laser irradiation-induced gas moves in the direction of the posterior capsule beyond the lens irradiation site and expands the lens capsule, which may be involved in the development of capsular block syndrome.https://www.mdpi.com/2076-3417/11/17/8247femtosecond laser-assisted cataract surgeryFLACScapsular block syndromelaser-induced gasposterior capsule rupture |
| spellingShingle | Yoichiro Masuda Kotaro Oki Akira Watanabe Makiko Ohkido Hisaharu Iwaki Takuya Shiba Tadashi Nakano Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes Applied Sciences femtosecond laser-assisted cataract surgery FLACS capsular block syndrome laser-induced gas posterior capsule rupture |
| title | Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes |
| title_full | Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes |
| title_fullStr | Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes |
| title_full_unstemmed | Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes |
| title_short | Behavior of Generated Gas during Femtosecond Laser Lens Irradiation in Porcine Cadaver Eyes |
| title_sort | behavior of generated gas during femtosecond laser lens irradiation in porcine cadaver eyes |
| topic | femtosecond laser-assisted cataract surgery FLACS capsular block syndrome laser-induced gas posterior capsule rupture |
| url | https://www.mdpi.com/2076-3417/11/17/8247 |
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