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Updated: May 31, 2026

Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System

Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System

Published on: May 6, 2015

Temporal retinal sensitivity in mesopic adaptation.

Beatriz M Matesanz¹, Luis Issolio, Isabel Arranz

¹Departamento de Óptica, Universidad de Valladolid, Valladolid, Spain. apa@opt.uva.es

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)

|July 15, 2011

Summary

This summary is machine-generated.

Night driving adaptation speed varies across the retina. Regions between 6° and 9° adapt faster than the fovea or further peripheral areas, impacting visual safety.

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Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

Area of Science:

Ophthalmology
Visual Neuroscience
Driver Safety

Background:

Night driving presents significant visual challenges under low light conditions.
Transient glare sources can impair retinal adaptation, affecting driver and pedestrian safety.

Purpose of the Study:

To analyze the retinal adaptation time response in the central 15° of the retina.
To investigate adaptation to both transient and steady mesopic light conditions.

Main Methods:

Measured absolute and luminance visual thresholds in three observers.
Utilized a Maxwellian view optical system for precise light stimulus delivery.
Assessed retinal eccentricities from 0° to 15° under varying adaptation field conditions.

Main Results:

Dark adaptation thresholds decreased in the peripheral retina, indicating increased rod function.
Luminance thresholds for transient and steady mesopic fields intersected within the first 15° of the peripheral retina.

Conclusions:

The fovea exhibits higher visual sensitivity compared to the peripheral retina studied.
Retinal regions between 6° and 9° demonstrated faster adaptation speeds than the fovea or regions beyond 9°.