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Related Experiment Video

Updated: Jun 9, 2025

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Published on: May 25, 2020

Testing Visual Function by Assessment of the Optomotor Reflex in Glaucoma.

Karen Chang¹, Julie Chen¹, Aishwarya Rajagopalan¹

¹Department of Ophthalmology, Harvard Medical School, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA.

Methods in Molecular Biology (Clifton, N.J.)

|October 21, 2024

Summary

Optomotor response (OMR) and optokinetic response (OKR) are reliable visual screening methods for assessing vision in animal models. These reflexes accurately measure visual acuity and contrast sensitivity, aiding research in eye diseases like glaucoma.

Keywords:

Behavioral tests Contrast sensitivity Retinal ganglion cells Rodent glaucoma models Visual acuity

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Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats

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Published on: October 23, 2020

Area of Science:

Neuroscience
Ophthalmology
Animal Models

Background:

Optomotor response (OMR) and optokinetic response (OKR) are innate visual reflexes used to assess vision.
These reflexes track head or eye movements in response to visual stimuli, providing quantitative visual function data.
OMR and OKR are reliable for evaluating scotopic and photopic vision, luminance, contrast, spatial frequency, and velocity.

Purpose of the Study:

To introduce the concept and application of OMR and OKR in visual assessment.
To highlight the utility of OMR and OKR in various animal models and eye disease research.
To discuss the role of OMR and OKR in evaluating pharmacological treatments and disease phenotypes.

Main Methods:

Utilizing OMR for nonrestrained animals and OKR for restrained animals.
Tracking head or eye movements in response to controlled visual stimuli.
Employing OMR and OKR to assess visual acuity (VA) and contrast sensitivity (CS).

Main Results:

OMR and OKR provide reliable and quantitative estimates of visual functions.
These methods are effective in evaluating the efficacy of treatments and disease progression in animal models.
OMR and OKR correlate with improved visual status, confirmed by methods like optical coherence tomography (OCT).

Conclusions:

OMR and OKR are powerful tools for eye and brain research, offering accessible and reliable results.
These visual reflexes are crucial for investigating retinal degenerative diseases, including glaucoma, retinitis pigmentosa, diabetic retinopathy, and age-related macular degeneration.
The application of OMR and OKR extends to neurodegenerative disorders and clinical studies in patients with glaucoma.