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Updated: Mar 27, 2026
A Mouse Model for Laser-induced Choroidal Neovascularization
Published on: December 27, 2015
A Mouse Model for Laser-induced Choroidal Neovascularization
Ronil S Shah1, Brian T Soetikno1, Michelle Lajko1
1Department of Ophthalmology, Northwestern University Feinberg School of Medicine.
Abstract:
The mouse laser-induced choroidal neovascularization (CNV) model has been a crucial mainstay model for neovascular age-related macular degeneration (AMD) research. By administering targeted laser injury to the RPE and Bruch's membrane, the procedure induces angiogenesis, modeling the hallmark pathology observed in neovascular AMD. First developed in non-human primates, the laser-induced CNV model has come to be implemented into many other species, the most recent of which being the mouse. Mouse experiments are advantageously more cost-effective, experiments can be executed on a much faster timeline, and they allow the use of various transgenic models. The miniature size of the mouse eye, however, poses a particular challenge when performing the procedure. Manipulation of the eye to visualize the retina requires practice of fine dexterity skills as well as simultaneous hand-eye-foot coordination to operate the laser. However, once mastered, the model can be applied to study many aspects of neovascular AMD such as molecular mechanisms, the effect of genetic manipulations, and drug treatment effects. The laser-induced CNV model, though useful, is not a perfect model of the disease. The wild-type mouse eye is otherwise healthy, and the chorio-retinal environment does not mimic the pathologic changes in human AMD. Furthermore, injury-induced angiogenesis does not reflect the same pathways as angiogenesis occurring in an age-related and chronic disease state as in AMD. Despite its shortcomings, the laser-induced CNV model is one of the best methods currently available to study the debilitating pathology of neovascular AMD. Its implementation has led to a deeper understanding of the pathogenesis of AMD, as well as contributing to the development of many of the AMD therapies currently available.
Insights
The mouse laser-induced choroidal neovascularization (CNV) model aids neovascular age-related macular degeneration (AMD) research by simulating AMD pathology. Despite limitations, this cost-effective model advances understanding and therapies for AMD.
Area of Science:
- Ophthalmology
- Retinal Research
- Animal Models
Background:
- The mouse laser-induced choroidal neovascularization (CNV) model is vital for studying neovascular age-related macular degeneration (AMD).
- This model replicates AMD's hallmark pathology by inducing angiogenesis via laser injury to the RPE and Bruch's membrane.
- While originating in primates, its use in mice offers cost-effectiveness, faster timelines, and access to transgenic models.
Purpose of the Study:
- To highlight the utility and challenges of the mouse laser-induced CNV model in neovascular AMD research.
- To discuss the model's application in investigating molecular mechanisms, genetic factors, and therapeutic interventions for AMD.
- To acknowledge the model's limitations while emphasizing its contribution to AMD research and therapy development.
Main Methods:
- Inducing targeted laser injury to the retinal pigment epithelium (RPE) and Bruch's membrane in mouse eyes.
- Developing fine dexterity and hand-eye coordination skills for precise laser application in small mouse eyes.
- Utilizing the model to study various aspects of neovascular AMD, including molecular pathways and treatment responses.
Main Results:
- The mouse CNV model successfully mimics key pathological features of neovascular AMD, including angiogenesis.
- Mastery of the procedure allows for detailed investigation into AMD's molecular mechanisms and the efficacy of potential treatments.
- The model has significantly contributed to the understanding of AMD pathogenesis and the development of current therapies.
Conclusions:
- The mouse laser-induced CNV model, despite not perfectly replicating all aspects of human AMD, remains an invaluable tool for AMD research.
- Its cost-effectiveness and adaptability make it a preferred model for studying AMD pathology and testing therapeutic strategies.
- Continued use and refinement of this model are expected to further advance the fight against neovascular AMD.
