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Chinese Journal of Lasers
Contents
1985
Volume: 12 Issue 10
24 Article(s)
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Research Article
[in Chinese]
.
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 1 (1985)
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Laser Devices and Laser Physics
Measurement of erythematous reaction by argon laser light for skin of yellow race
Li Jishi, Shi Hongmin, Tan Yankang, Luo Panxiang, Chen Zhongben, and Yuan Yuehuan
This paper describes an Ar+ laser used for measuring MBD60 for the skin of the yellow race. The skin erythematous reaction threshold level at 488.0 nm and 514.5nm for two groups of volunteers are measured. The skin of the volunteers is exposed to the above energy densities, and histological examination finds that capil
This paper describes an Ar+ laser used for measuring MBD60 for the skin of the yellow race. The skin erythematous reaction threshold level at 488.0 nm and 514.5nm for two groups of volunteers are measured. The skin of the volunteers is exposed to the above energy densities, and histological examination finds that capillaries are expanded and filled with erythro-cytes and light edema, but there is no significant change of the cuticle..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 577 (1985)
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Study of injury threshold of CW Nd: YAG laser light for human skin
Ma Baozhang, Xia Weiya, Zhuo Ruipeng, Jiang Lanying, Hu Qingshen, Li Zhaozhang, and Wu Jianu
According to the animal and human skin experiments the result of the injury threshold of CW Nd: YAG laser of Chinese human skin are: MBD50 of relatively white people, 65.519 J/cm2, yellow people 60.989 J/cm3, relative black people 52.321J/cm2. It was proved that the amount of skin pigment is closely related to the abso
According to the animal and human skin experiments the result of the injury threshold of CW Nd: YAG laser of Chinese human skin are: MBD50 of relatively white people, 65.519 J/cm2, yellow people 60.989 J/cm3, relative black people 52.321J/cm2. It was proved that the amount of skin pigment is closely related to the absorpsion of Nd:YAG laser light..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 582 (1985)
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Injury threshold of ruby laser irradiation on human skin
Chen Ji, Wang Jun, Lu Shanfen, Xu Guidao, Shi Liangshun, Qian Huanwen, and Wang Denglong
This paper reports experimental results of human skin exposed to ruby laser light. Bystatistical analysis of the erythema produced with 24 hours post-exposure, EDso about 4.7J/cm2 was obtained.
This paper reports experimental results of human skin exposed to ruby laser light. Bystatistical analysis of the erythema produced with 24 hours post-exposure, EDso about 4.7J/cm2 was obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 586 (1985)
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Acute injury threshold level of CO
2
laser light for skin of yellow race
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
Acute injury threshold lelvel MRD50 of CO2 laser light for the skin of eight white piggies was measured. On the basis of the animal experiment, the same measurement for the skin of six yellow people, was made. MED50 was found to be 2.3 J/cm2. The skin of 5 volunteers was exposed to the above energy densities,and histol
Acute injury threshold lelvel MRD50 of CO2 laser light for the skin of eight white piggies was measured. On the basis of the animal experiment, the same measurement for the skin of six yellow people, was made. MED50 was found to be 2.3 J/cm2. The skin of 5 volunteers was exposed to the above energy densities,and histologieal examination found that capillaries are expanded and filled with erythrooytes and light edema, but there is no significant change of cuticle. This indicates that the MBD50 erythematous reaction is minimal and reversible..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 589 (1985)
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Study of injury threshold of skin irradiated with 265 nm pulsed laser light
Li Zhaoshang, Wu Jianu, Gai Bakang, and Zhuo Yan
Investigation of ultraviolet erythema of the skin irradiated with 265 nm pulsed laser was presented. Two phases of reactions of ultraviolet erythema-immediate and delayed ones were clearly observed in our experiment. The probability statistical analysis indicated that minimal dose of 50% perceptible redness oecurence r
Investigation of ultraviolet erythema of the skin irradiated with 265 nm pulsed laser was presented. Two phases of reactions of ultraviolet erythema-immediate and delayed ones were clearly observed in our experiment. The probability statistical analysis indicated that minimal dose of 50% perceptible redness oecurence rate on the porket skin (22.00 mJ/cm2) is fiducial..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 592 (1985)
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Investigation on laser injury threshold of skin
Wu Qingzhen, Dong Peiying, Zhuo Ruipong, Hu Qingshen, Li Zhaoshang, Gai Baokang, Jiang Lanying, and Wu Jianu
This paper reports the research results on laser injury threshold of skin irradiated by 200s pulsed Nd glass laser, CO2 laser and 488 nm Ar ion laser light.
This paper reports the research results on laser injury threshold of skin irradiated by 200s pulsed Nd glass laser, CO2 laser and 488 nm Ar ion laser light..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 597 (1985)
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Injury threshold of retina irradiated by argon laser light
Wang Kangsun, Wang Ling, Zhang Mingheng, Shi Xianghe, Chen Gangqiang, Hu Qingsheng, Zhuo Ruipeng, Jiang Lanying, and Wu Jianu
The material, method, results and discussion of the research on the injury threshold of rabbit, monkey, and human being retina irradiated by argon laser light are introduced in this paper. When exposure time is 0.1s, the retinal injury threshold (ED50) is 0.506 W/cm2 for rabbit, 0.834W/cm2 for monkey, and 1.757 W/cm2 f
The material, method, results and discussion of the research on the injury threshold of rabbit, monkey, and human being retina irradiated by argon laser light are introduced in this paper. When exposure time is 0.1s, the retinal injury threshold (ED50) is 0.506 W/cm2 for rabbit, 0.834W/cm2 for monkey, and 1.757 W/cm2 for human being. When exposure time is 1s, the retinal injury threshold is 0.428 W/cm2for rabbit..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 600 (1985)
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Experimental study on injury threshold of animal retinas by 488 nm laser irradiation
Zhao Tongzhen, Dang Zhiping, An Xiaoyue, Zhang Xiaoru, and Guo Wenqi
This paper reports the experimental results about the retinal injury of animals arising from 488 nm laser irradiation. The ED50 of the retinal injury in rabbits and monkeys were obtained when the laser beam is parallel or passing through convergent lens. We also measured the facular diameter at cornea or retina with ei
This paper reports the experimental results about the retinal injury of animals arising from 488 nm laser irradiation. The ED50 of the retinal injury in rabbits and monkeys were obtained when the laser beam is parallel or passing through convergent lens. We also measured the facular diameter at cornea or retina with either beam..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 603 (1985)
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Research on injury threshold of rabbits’ cornea by CO
2
laser
Wang Kangsun, Wang Ling, Zhang Mingheng, Shi Xianghe, Chen Gangqiang, Shi Haiyun, Zhuo Ruipeng, Hu Qingsheng, Jiang Lanying, Wang Yuejin, and Gai Baokang
The material,method and results of the research on the injury threshold of rabbits’ cornea caused by GW CO2 laser light are introduced in this paper. The dose for causing BD50 varies with the time of exposure: they are 3.62W/cm2 and 4.01W/cm2 for 1s and 125ms irradiation respectively.
The material,method and results of the research on the injury threshold of rabbits’ cornea caused by GW CO2 laser light are introduced in this paper. The dose for causing BD50 varies with the time of exposure: they are 3.62W/cm2 and 4.01W/cm2 for 1s and 125ms irradiation respectively..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 606 (1985)
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Research on injury threshold of grey rabbits’ retina by Q-switched and frequency doubled Nd
3+
:YAG laser
Wang Kangsun, Wang Ling, Zhang Minheng, Shi Xianghe, Chen Gangqiang, Shi Haiyun, Jiang Lanying, Zhuo Buipeng, Hu Qingsheng, and Wu Jianu
The material, method and results of the research on the injury threshold of grey rabbits’ retina caused by Q-switched and frequency doubled Nd3+:YAG laser light are introduced in this paper. When exposure time is 8 ns, ED50 is 232.05J/cm2 (precornea).
The material, method and results of the research on the injury threshold of grey rabbits’ retina caused by Q-switched and frequency doubled Nd3+:YAG laser light are introduced in this paper. When exposure time is 8 ns, ED50 is 232.05J/cm2 (precornea)..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 609 (1985)
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Retinal injury threshold by CW Nd
3+
:YAG laser light
Xu Jiemin, Hu Fugen, Zhou Shuying, Cao Weiqun, Xu Guidao, Qian Huanwen, Shi Liangshun, and Wang Denglong
One hundred chinchilla rabbit eyes were exposed to CW Nd3+:YAG laser light. Using Ophthalmoscopie criteria for retinal injury, the intraocular injury points (ED50) were 2.52 W/cm2 and 5.42 W/cm2 for exposure time of 1.02 s and 0.12 s, respectively.
One hundred chinchilla rabbit eyes were exposed to CW Nd3+:YAG laser light. Using Ophthalmoscopie criteria for retinal injury, the intraocular injury points (ED50) were 2.52 W/cm2 and 5.42 W/cm2 for exposure time of 1.02 s and 0.12 s, respectively..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 612 (1985)
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Injury threshold of human eyes by pulsed YAG laser beams and the pathological observation
Chen Rongjia, Chu Renyuan, Li Mengchang, Li Lin, Lu Jiahua, Fu Tiansheng, Cui Jixiu, Zhu Baoqian, and Lu Zhenshen
The threshold of human retina by 150s pulsed YAG laser beam irradiation is reported in this paper. Pathological phenomenons of injured retina were observed directly usingthe optical microscope and the electronic microscope.
The threshold of human retina by 150s pulsed YAG laser beam irradiation is reported in this paper. Pathological phenomenons of injured retina were observed directly usingthe optical microscope and the electronic microscope..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 615 (1985)
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Study of retinal injury threshold for Nd:YAG frequency-doubled laser light
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
When the eyes of chinchilla rabbits and rhesus monkeys were exposed to laser pulse of the wavelength of 0.53m, the ED50 value thus obtained were 39.2 u J/cm2 and 187 uj/ cm2 for intraocular energy density respectively. The experimental results showed that monkey fundus is considerably less sensitive than the rabbit fun
When the eyes of chinchilla rabbits and rhesus monkeys were exposed to laser pulse of the wavelength of 0.53m, the ED50 value thus obtained were 39.2 u J/cm2 and 187 uj/ cm2 for intraocular energy density respectively. The experimental results showed that monkey fundus is considerably less sensitive than the rabbit fundus..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 618 (1985)
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Retinal injury threshold of long pulse ruby laser light
Xu Jiemin, Hu Fugen, Zhou Shuying, Cao Weiqun, Qian Huanwen, Zhang Guisu, and Wang Denglong
Threshold of observable retinal injury was determined for chinchilla rabbits exposed to long pulse ruby laser light irradiation. The threshold, ED50 was 14.9mJ/cm2 and its 95% confidence limit was 13.6-~16.5mJ/cm2 for intraocular energy density.
Threshold of observable retinal injury was determined for chinchilla rabbits exposed to long pulse ruby laser light irradiation. The threshold, ED50 was 14.9mJ/cm2 and its 95% confidence limit was 13.6-~16.5mJ/cm2 for intraocular energy density..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 621 (1985)
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A study of single mode He-Ne laser injury threshold of rabbit’s eyes
Ding Weiling, Zhao Tianji, Qiang Ruling, Wu Guifang, Liu Changting, and Mu Ruidong
In this experiment, gray chinchilla rabbits were exposed to He-Ne laser light with 6 and 5 different dosages respectively. The exposure time was 1 second and 1/8 second. 30 points were exposed for every dosage. ED50, the probability of injury to the retina at a rate of 60%, was obtained.
In this experiment, gray chinchilla rabbits were exposed to He-Ne laser light with 6 and 5 different dosages respectively. The exposure time was 1 second and 1/8 second. 30 points were exposed for every dosage. ED50, the probability of injury to the retina at a rate of 60%, was obtained..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 623 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper deals with laser injury threshold for Chinese yellow skin by exposure to 1s CW Nd:YAG laser beam. The results of the experiment are:MRD equals to 71.37 W/cm3, and its 95% confidence limit is 67.47~75.49W/cm2.
This paper deals with laser injury threshold for Chinese yellow skin by exposure to 1s CW Nd:YAG laser beam. The results of the experiment are:MRD equals to 71.37 W/cm3, and its 95% confidence limit is 67.47~75.49W/cm2..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 626 (1985)
Get PDF
[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper studies laser injury thresholds of 300s pulsed neodymium glass laser. The experimental results are: MED equals to 20.27 J/cm3, and its 95% confidence limit is 19.49~21.08J/cm2.
This paper studies laser injury thresholds of 300s pulsed neodymium glass laser. The experimental results are: MED equals to 20.27 J/cm3, and its 95% confidence limit is 19.49~21.08J/cm2..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 628 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper reports the experimental results of pig skin exposed to ruby laser light. By statistical analysis of the erythema produced within 24 hours post-exposures, ED60 about 53.3 J/cm2 was obtained. The microscopic and scanning electron microscopic examinations showed nothing but the blood vessels dilation of derma
This paper reports the experimental results of pig skin exposed to ruby laser light. By statistical analysis of the erythema produced within 24 hours post-exposures, ED60 about 53.3 J/cm2 was obtained. The microscopic and scanning electron microscopic examinations showed nothing but the blood vessels dilation of derma after a near threshold-dose irradiation on skin..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 631 (1985)
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[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
This paper reports the pathological changes of retina! injury arising from argon laser irradiation with various laser densities and exposure time, and the characteristics of retinal biological effect arising from the irradiation.
This paper reports the pathological changes of retina! injury arising from argon laser irradiation with various laser densities and exposure time, and the characteristics of retinal biological effect arising from the irradiation..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 633 (1985)
Get PDF
[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
The experimental method and the results are described in this paper. The injury thresholds of chinchilla retina by CW and pulsed YAG laser (1.06m) has been determined. The injury of retina for monkeys have also been studied using 150s pulsed YAG laser beams.
The experimental method and the results are described in this paper. The injury thresholds of chinchilla retina by CW and pulsed YAG laser (1.06m) has been determined. The injury of retina for monkeys have also been studied using 150s pulsed YAG laser beams..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 634 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper reports the experimental results about the retinal injury of animals by 694.3nm irradiation. The ED50 of retinal injury was obtained. The pathological charaoteriatics of retina was observed and experimental techniques are presented.
This paper reports the experimental results about the retinal injury of animals by 694.3nm irradiation. The ED50 of retinal injury was obtained. The pathological charaoteriatics of retina was observed and experimental techniques are presented..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 636 (1985)
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[in Chinese]
[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], and [in Chinese]
This paper discribes the microscopic visual method with micrometer for facular diameter measurement of retina and cornea. Its characteristics are simple, rapid, accurate and harmless to eyes. It has much meaning on the basic research and clinical treatment.
This paper discribes the microscopic visual method with micrometer for facular diameter measurement of retina and cornea. Its characteristics are simple, rapid, accurate and harmless to eyes. It has much meaning on the basic research and clinical treatment..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 637 (1985)
Get PDF
[in Chinese]
[in Chinese], [in Chinese], and [in Chinese]
The measurement of transmissivity of 488nm argon laser light through refractive system of the rabbit’s eyes in vitro is reported in this paper.
The measurement of transmissivity of 488nm argon laser light through refractive system of the rabbit’s eyes in vitro is reported in this paper..
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Chinese Journal of Lasers
Publication Date: Jan. 01, 1900
Vol. 12, Issue 10, 638 (1985)
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