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Optic disc imaging in conscious rats and mice
Bruce E Cohan1, Andrew C Pearch, Pentti T Jokelainen
1Eye Research Fund Laboratory, Medical School of the University of Michigan, 2350 Washtenaw Avenue, Ann Arbor, MI 48104, USA. becohan@umich.edu
Investigative Ophthalmology & Visual Science
|December 31, 2002
Summary
Researchers successfully imaged rat and mouse optic discs using a slit lamp and contact lens, providing valuable data for glaucoma research and animal model studies.
Area of Science:
- Ophthalmology
- Animal Models
- Medical Imaging
Background:
- Optic disc imaging is crucial for diagnosing optic neuropathy, particularly in glaucoma.
- Current methods for imaging rodent optic discs are limited, hindering research.
- Developing non-invasive imaging techniques for rodent models is essential for advancing glaucoma research.
Purpose of the Study:
- To evaluate the utility of a photo slit lamp and modified Goldmann-type fundus contact lens for imaging conscious rodent optic discs.
- To determine if this method yields images comparable to those used in human clinical practice.
Main Methods:
- Utilized a photo slit lamp with teleconverters and a digital camera.
- Employed a custom-fabricated Goldmann-type fundus contact lens designed for rodent eyes.
- Performed imaging on conscious rats and mice.
Main Results:
- Obtained high-quality images of rat and mouse optic discs.
- Images are comparable to those used by ophthalmologists for assessing optic neuropathy.
- Observed a key difference: the optic disc cup in rodents appears darker than the neural rim, unlike in humans.
Conclusions:
- This imaging technique is valuable for studying optic disc cupping in rodent models of glaucoma.
- It can aid in detecting and documenting the progression of optic neuropathy.
- The method supports the identification of animal models, investigation of neuropathogenic mechanisms, and evaluation of therapeutic interventions.