Pupil light reflex produced by glare under mesopic adaptation

The amount of light captured by the eye depends on pupil size. Moreover, one of the factors determining the steady-state pupil size is ambient illumination and sudden increments of light reaching the retina cause a brisk and transient pupil constriction described as the dynamic Pupil Light Reflex re...

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Guardado en:
Detalles Bibliográficos
Publicado: 2007
Materias:
Latency
Mesopic
PLR
Pupil size
Transient glare
CCD cameras
Glare
Light sources
Vision
Illuminance level
Light reflex
Light reflection
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03878805_v31_n2_p70_Colombo
http://hdl.handle.net/20.500.12110/paper_03878805_v31_n2_p70_Colombo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03878805_v31_n2_p70_Colombo
record_format dspace
spelling paper:paper_03878805_v31_n2_p70_Colombo2023-06-08T15:40:53Z Pupil light reflex produced by glare under mesopic adaptation Latency Mesopic PLR Pupil size Transient glare CCD cameras Glare Light sources Vision Illuminance level Light reflex Pupil size Light reflection The amount of light captured by the eye depends on pupil size. Moreover, one of the factors determining the steady-state pupil size is ambient illumination and sudden increments of light reaching the retina cause a brisk and transient pupil constriction described as the dynamic Pupil Light Reflex response. In experiments where a glare source acts as transient conditioning field, a methodology to measure pupil diameter is required. In the present paper pupil diameter, in steady (0.5cd/m2) and dynamic adaptation conditions, is measured. The dynamic state is originated by a transient peripheral glare source with three different illuminance levels (15, 30 and 60lx). Ten eyes of 5 subjects (19, 36, 50, 53 and 52 years old) are considered. The measurements are made by means of a video of the pupil captured with a CCD while the sight is fixated in a chart. In the steady condition, the average pupil diameter for each subject varies between 4.8 and 7.2 mm from one subject to another. In the dynamic condition, latency time results to be independent both of the subject and of the glare level, adding evidence to the robustness of this parameter when radiation is not incident centrally. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03878805_v31_n2_p70_Colombo http://hdl.handle.net/20.500.12110/paper_03878805_v31_n2_p70_Colombo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Latency
Mesopic
PLR
Pupil size
Transient glare
CCD cameras
Glare
Light sources
Vision
Illuminance level
Light reflex
Pupil size
Light reflection
spellingShingle Latency
Mesopic
PLR
Pupil size
Transient glare
CCD cameras
Glare
Light sources
Vision
Illuminance level
Light reflex
Pupil size
Light reflection
Pupil light reflex produced by glare under mesopic adaptation
topic_facet Latency
Mesopic
PLR
Pupil size
Transient glare
CCD cameras
Glare
Light sources
Vision
Illuminance level
Light reflex
Pupil size
Light reflection
description The amount of light captured by the eye depends on pupil size. Moreover, one of the factors determining the steady-state pupil size is ambient illumination and sudden increments of light reaching the retina cause a brisk and transient pupil constriction described as the dynamic Pupil Light Reflex response. In experiments where a glare source acts as transient conditioning field, a methodology to measure pupil diameter is required. In the present paper pupil diameter, in steady (0.5cd/m2) and dynamic adaptation conditions, is measured. The dynamic state is originated by a transient peripheral glare source with three different illuminance levels (15, 30 and 60lx). Ten eyes of 5 subjects (19, 36, 50, 53 and 52 years old) are considered. The measurements are made by means of a video of the pupil captured with a CCD while the sight is fixated in a chart. In the steady condition, the average pupil diameter for each subject varies between 4.8 and 7.2 mm from one subject to another. In the dynamic condition, latency time results to be independent both of the subject and of the glare level, adding evidence to the robustness of this parameter when radiation is not incident centrally.
title Pupil light reflex produced by glare under mesopic adaptation
title_short Pupil light reflex produced by glare under mesopic adaptation
title_full Pupil light reflex produced by glare under mesopic adaptation
title_fullStr Pupil light reflex produced by glare under mesopic adaptation
title_full_unstemmed Pupil light reflex produced by glare under mesopic adaptation
title_sort pupil light reflex produced by glare under mesopic adaptation
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03878805_v31_n2_p70_Colombo
http://hdl.handle.net/20.500.12110/paper_03878805_v31_n2_p70_Colombo
_version_ 1768541800542240768

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