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Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
Age-related macular degeneration
Laurence S Lim1, Paul Mitchell, Johanna M Seddon
1Singapore Eye Research Institute, Singapore National Eye Centre, Singapore.
Lancet (London, England)
|May 8, 2012
Summary
Age-related macular degeneration (AMD) is a leading cause of blindness, affecting over 20% of older adults. Early diagnosis and treatments like anti-VEGF injections can slow vision loss from this common eye disease.
Area of Science:
- Ophthalmology
- Geriatrics
- Genetics
Background:
- Age-related macular degeneration (AMD) is a significant global cause of irreversible blindness, particularly impacting aging populations.
- Advanced AMD, encompassing wet neovascular AMD and geographic atrophy (late dry AMD), leads to severe, progressive vision loss.
- Key risk factors include smoking, nutrition, cardiovascular health, and genetic predispositions in complement, lipid, and angiogenic pathways.
Purpose of the Study:
- To review the prevalence, risk factors, diagnosis, and current/future treatments for age-related macular degeneration.
- To highlight the impact of aging populations on AMD prevalence and the importance of identifying modifiable risk factors.
- To discuss diagnostic modalities and therapeutic strategies, including anti-VEGF agents and emerging regenerative options.
Main Methods:
- Literature review of epidemiological data, risk factors, diagnostic techniques, and therapeutic interventions for AMD.
- Analysis of current treatment outcomes, including anti-VEGF therapies like ranibizumab and bevacizumab.
- Exploration of emerging and future treatment avenues, such as regenerative and topical therapies.
Main Results:
- AMD prevalence is high and increasing with aging populations, though some studies suggest a decline possibly linked to reduced modifiable risk factors.
- Accurate diagnosis relies on clinical examination combined with retinal photography, angiography, and optical coherence tomography.
- Dietary antioxidants can slow AMD progression, while intraocular anti-VEGF injections are standard for wet AMD, with ranibizumab and bevacizumab showing similar efficacy.
Conclusions:
- Effective management of age-related macular degeneration involves early diagnosis and intervention, with anti-VEGF therapy being a cornerstone for wet AMD.
- Understanding genetic and modifiable risk factors is crucial for prevention and treatment strategies.
- Ongoing research into novel therapies, including regenerative and topical treatments, offers hope for improved outcomes in AMD management.
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