Details

Autor(en) / Beteiligte

• Asakawa, Ken
• Ito, Akari
• Kobayashi, Hinako
• Iwai, Aya
• Ito, Chihiro
• Ishikawa, Hitoshi

Titel

Adaptation time, electroretinography, and pupillography in healthy subjects

Ist Teil von

• Documenta ophthalmologica, 2019-08, Vol.139 (1), p.33-44

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2019

Quelle

MEDLINE

Beschreibungen/Notizen

• Purpose To investigate the relationship between adaptation time and the parameters of electroretinography (ERG) and pupillography in healthy subjects. Methods Forty-six eyes of 23 healthy women (mean age 21.7 years) were enrolled. ERG and pupillography were tested in each of the right and left 23 eyes, respectively. ERG with a skin electrode was used to determine amplitude and implicit time by the records of rod-, flash-, cone-, and flicker-responses with white light (0.01–30 cd s/m 2 ). Infrared pupillography was used to record the pupillary light reflex to 1-s stimulation of red light (100 cd/m 2 ). Cone- and flicker- (rod-, flash- and pupil) responses were recorded after light (dark) adaptation at 1, 5, 10, 15, and 20 min. Results Amplitude (µV) was significantly different between 1 min and ≥ 5 or ≥ 10 min after adaptation in b -wave of cone- or rod-response, respectively. Implicit time (ms) 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 (mm) or constriction rate (%), respectively. Conclusions Cone-driven ERG can be recorded, even in 5 min of light adaptation time without any special light condition, whereas rod-driven ERG and pupillary response results can be obtained in 10 min or longer of dark adaptation time in complete darkness.