A Study of the Normal Value of Dark Adaptation Time for Healthy Chinese Pilots

1989 ◽  
Author(s):  
Shihong Gao ◽  
Jialong Wu ◽  
Dongxian Hao ◽  
Changming Kang
Keyword(s):  
Dark Adaptation ◽  
Normal Value ◽  
Adaptation Time ◽  
Healthy Chinese

Assessment of the dark-adaptation time required for recovery of electroretinographic responses in dogs after fundus photography and indirect ophthalmoscopy

2005 ◽  
Vol 66 (10) ◽  
pp. 1798-1804 ◽  
Author(s):  
Nalinee Tuntivanich ◽  
A. Lexi Mentzer ◽  
Danielle M. Eifler ◽  
Fabiano Montiani-Ferreira ◽  
Janice Q. Forcier ◽  
...  
Keyword(s):  
Dark Adaptation ◽  
Fundus Photography ◽  
Adaptation Time ◽  
Indirect Ophthalmoscopy ◽  
Time Required

scholarly journals Time-course of adaptations for electroretinography and pupillography

2021 ◽  
Vol 9 (4) ◽  
Author(s):  
Ken Asakawa
Keyword(s):  
Dark Adaptation ◽  
Time Course ◽  
Light Adaptation ◽  
Light Condition ◽  
Pupillary Response ◽  
Implicit Time ◽  
Scotopic Vision ◽  
Adaptation Time ◽  
Practical Applications ◽  
Rod Response

Cones are primarily involved in photopic vision and light adaptation. Rods are responsible for scotopic vision and dark adaptation. The typical time-courses of light and dark adaptations have been known for century. However, information regarding the minimal adaptation time for electroretinography (ERG) and pupillography would be helpful for practical applications and clinical efficiency. Therefore, we investigated the relationship between adaptation time and the parameters of ERG and pupillography. Forty-six eyes of 23 healthy women (mean age, 21.7 years) were enrolled. ERG and pupillography were tested for right and left eyes, respectively. ERG with a skin electrode was used to determine amplitude (µV) and implicit time (msec) by the records of rod-, flash-, cone-, and flicker-responses with white light (0.01–30 cd·s/m2). Infrared pupillography was used to record the pupillary response to 1-sec stimulation of red light (100 cd/m2). Cone- and flicker- (rod-, flash-, and pupil) responses were recorded after light (dark) adaptation at 1, 5, 10, 15, and 20 min. Amplitude was significantly different between 1 min and ≥5 or ≥10 min after adaptation in b-wave of cone- or rod-response, respectively. Implicit time differed significantly between 1 min and ≥5 min after adaptation with b-wave of cone- and rod-response. There were significant differences between 1 min and ≥10 or ≥5 min after dark adaptation in parameter of minimum pupil diameter or constriction rate, respectively. Consequently, light-adapted ERGs can be recorded, even in 5 min of light adaptation time without special light condition, whereas dark-adapted ERGs and pupillary response results can be obtained in 10 min or longer of dark adaptation time in complete darkness.

scholarly journals ERG shrinks by 10% when reducing dark adaptation time to 10 min, but only for weak flashes

2020 ◽  
Vol 141 (1) ◽  
pp. 57-64
Author(s):  
Michael Bach ◽  
Cornelia Meroni ◽  
Sven P. Heinrich
Keyword(s):  
Dark Adaptation ◽  
Adaptation Time

scholarly journals The determination of dark adaptation time using electroretinography in conscious Miniature Schnauzer dogs

2007 ◽  
Vol 8 (4) ◽  
pp. 409 ◽  
Author(s):  
Hyung-Ah Yu ◽  
Man-Bok Jeong ◽  
Shin-Ae Park ◽  
Won-Tae Kim ◽  
Se-Eun Kim ◽  
...  
Keyword(s):  
Dark Adaptation ◽  
Adaptation Time

scholarly journals Simulating Human Visual Perception in Tunnel Portals

2021 ◽  
Vol 13 (7) ◽  
pp. 3741
Author(s):  
Changjiang Liu ◽  
Qiuping Wang
Keyword(s):  
Experimental Data ◽  
Visual Perception ◽  
Dark Adaptation ◽  
Light Adaptation ◽  
Human Vision ◽  
Adaptation Process ◽  
Human Visual Perception ◽  
Recognition Time ◽  
Design Data ◽  
Adaptation Time

To study the characteristics of light and dark adaptation in tunnel portals, and to determine the influencing factors in light–dark vision adaptation, basic tunnel lighting and linear design data were obtained. In this study, we used a light-shielded tent to simulate the dark environment of a tunnel, observe the driver recognition time for target objects during the light–dark adaptation process, and analyze the light–dark adaptation time of human vision. Based on the experimental data, we examined the relationships between age, gender, illuminance, and light and dark adaptation times, and established a model for these relationships. The experimental results show that the dark adaptation time is generally longer than the light adaptation time. The dark adaptation time is positively related to age and exhibits a cubic relationship. There is no significant correlation between the light adaptation time and age, but the overall trend is for the light adaptation time to gradually increase with increasing age. There is no correlation between gender and light and dark adaptation times, but there is a notable correlation between light and dark adaptation times and illuminance. When the illuminance ranges from 11,000 to 13,000 lux, the light and dark adaptation times are the longest.

Study on the Dark Adaptation Time of Algaes Stressed by Cu2+Using Chlorophyll Fluorescence Measurements

2014 ◽  
Vol 43 (2) ◽  
pp. 217002
Author(s):  
段静波 DUAN Jing-bo ◽  
刘文清 LIU Wen-qing ◽  
张玉钧 ZHANG Yu-jun ◽  
赵南京 ZHAO Nan-jing ◽  
王志刚 WANG Zhi-gang ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Dark Adaptation ◽  
Adaptation Time ◽  
Fluorescence Measurements

scholarly journals Dark adaptation time in canine electroretinography using a contact lens electrode with a built-in light source

2015 ◽  
Vol 77 (10) ◽  
pp. 1335-1338 ◽  
Author(s):  
Seiya MAEHARA ◽  
Yoshiki ITOH ◽  
Sho HOSHINO ◽  
Miri HAYASHI ◽  
Yosuke ITO
Keyword(s):  
Light Source ◽  
Contact Lens ◽  
Dark Adaptation ◽  
Adaptation Time ◽  
Contact Lens Electrode

scholarly journals Research on Light-Dark Adaptation of Human Vision in Tunnel Portals

2021 ◽  
Author(s):  
Changjiang Liu ◽  
Qiuping Wang
Keyword(s):  
Experimental Data ◽  
Dark Adaptation ◽  
Light Adaptation ◽  
Human Vision ◽  
Adaptation Process ◽  
Recognition Time ◽  
Design Data ◽  
Adaptation Time ◽  
The Relationship ◽  
Tunnel Portal

Abstract To study the characteristics of light and dark adaptation in tunnel portal sections and to determine the influencing factors of light-dark vision adaptation, basic tunnel lighting and linear design data are obtained. In this paper, we use a light-shielded tent to simulate the dark environment of a tunnel in experiments, observe the driver recognition time of target objects during the light-dark adaptation process, and analyze the light-dark adaptation time of human vision. Based on a large number of experimental data, we examined the relationship between age, gender, illuminance and light and dark adaptation times and established a model of the relationship between age, illuminance and light and dark adaptation times. The experimental results revealed that the dark adaptation time is generally longer than the light adaptation time. The dark adaptation time is positively related to age and basically exhibits a cubic relationship. There is no significant correlation between the light adaptation time and age, but the overall trend is that the light adaptation time gradually increases with increasing age. There is no correlation between gender and light and dark adaptation times, but there is a notable correlation between the light and dark adaptation times and illuminance. When the illuminance ranges from 11000-13000 lux, the light and dark adaptation times are the longest.

Dark adaptation changes in highly myopic patients

2018 ◽  
Vol 29 (3) ◽  
pp. 287-294
Author(s):  
Arnaud Messerlin ◽  
Mathieu Greth ◽  
Tristan Bourcier ◽  
Arnaud Sauer ◽  
Claude Speeg-Schatz ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Retinal Pigment Epithelium ◽  
Axial Length ◽  
Dark Adaptation ◽  
Pigment Epithelium ◽  
Retinal Pigment ◽  
Adaptation Time ◽  
Retinal Pigment Epithelium Atrophy ◽  
The Mean

Purpose: The objective of this study was to determine whether the dark adaptation time was longer in highly myopic patients than in emmetropic patients and whether there was a correlation between dark adaptation results and axial length. Patients and methods: We conducted a retrospective study that included highly myopic patients with −6.00 dioptres or more, matched to emmetropic control patients of the same age. All patients underwent an automated adaptometry protocol that calculates the rod intercept that reflects rod-mediated dark adaptation. Axial length was measured. Colour photographs were taken to look for retinal atrophic lesions. Results: A total of 25 highly myopic patients and 25 control patients were included. The mean rod intercept was 4.38 (±1.60) min in the myopic patients and 4.27 (±1.41) min in the control patients. This difference was not statistically significant ( p = 0.79). However, in myopic patients, the longer the axial length was, the longer the dark adaptation time was ( p = 0.0003). In addition, dark adaptation was significantly longer in myopic patients with retinal pigment epithelium atrophy than in patients without lesions ( p = 0.0398). Conclusion: In this study, dark adaptation time did not significantly differ between myopic patients and controls but was correlated with axial length in patients with severe myopia and was significantly longer in the presence of retinal pigment epithelium atrophic lesions.

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