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Understanding neovascular age-related macular degeneration

OphthalmologyPatientsDisease management
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Neovascular age-related macular degeneration (nAMD), also often called “wet” AMD, is the leading cause of vision loss in people aged over 60.1-3 nAMD affects 20 million people worldwide,1-3 with numbers anticipated to grow due to an ageing population and an increase in life expectancy.2,4

Age-related macular degeneration (AMD) is a condition that affects the macula, the part of the eye that provides sharp, central vision needed for activities like reading.1,5

Neovascular age-related macular degeneration (nAMD) is an advanced form of the disease that can cause rapid and severe vision loss if left untreated.6,7 It develops when new and abnormal blood vessels grow uncontrolled under the macula, causing swelling, bleeding and/or the formation of scar tissue.7

nAMD can limit a person’s ability to read, drive, see pictures and even recognise faces.1,8 People’s professional and social lives may be affected, potentially reducing income, increasing social isolation, and causing depression and anxiety disorders.8-11

What are the signs and symptoms of nAMD?

Many people do not immediately recognise the symptoms of AMD, mistaking them for normal signs of ageing. This leads to more severe conditions such as nAMD and geographic atrophy.12,13 Symptoms to be aware of include:1,14-16

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Blurred vision
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Difficulty seeing at distance or doing detailed work
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Blind spots developing in the line of sight
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Difficulty distinguishing between colours
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Edges and straight lines appearing wavy

What are the risk factors for nAMD?

There are a number of risk factors associated with developing nAMD, which include:17,18

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Increasing age
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Obesity
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Genetics

Family history of AMD

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Gender

Women are at a higher risk

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Race

More common among Caucasians

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Smoking

Smokers are 2-5 times more likely to be impacted

Current treatment options for nAMD

The current standard of care for nAMD is intravitreal (IVT) injections (injected directly into the eye) of VEGF inhibitors or dual VEGF/Ang-2 inhibitors.19-21 These treatments help to prevent development of new blood vessels and limit leakage from abnormal blood vessels in the eye, mostly under the retina.19-21

Anti-VEGF challenges

IVT anti-VEGF treatments only target one of the pathways that drive the development and progression of nAMD.19-21 Unfortunately, many patients do not fully respond to this treatment, lose response over time, or they show sub-optimal durability.20 Further, frequent IVT anti-VEGF eye injections – sometimes as often as monthly – are needed to maintain vision gains and anatomy, which can be challenging to maintain, potentially leading to undertreatment and worse outcomes.19

Annual eye test

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Getting an annual eye test is the best way to detect any changes in vision. However, if you notice any new or worsening changes in your vision, contact an eye care professional promptly rather than waiting for your next routine appointment. A dilated retinal examination will help to diagnose any retinal diseases. If you’d like more information on nAMD or other retinal diseases, talk to your eye care professional or visit  www.retina-international.org

References

  1. Bright Focus Foundation. Macular Degeneration Facts & Figures. A https://www.brightfocus.org/macular/facts-figures/. ccessed July 17, 2026. 

  2. Wong WL, et al. Lancet Glob Health. 2014;2(2):e106-e116.

  3. Connolly E, et al. Br J Ophthalmol. 2018;102(12):1691-1695.

  4. Lim JI, et al. Eye. 2025;39(11):2223-2230.

  5. All About Vision. Macula lutea. https://www.allaboutvision.com/eye-care/eye-anatomy/eye-structure/macula/. Accessed July 17, 2026. 

  6. Pennington KL, et al. Eye Vis. 2016;3:34.

  7. Little K, et al. eBioMedicine. 2018;38:283-291.

  8. Park SJ, et al. JAMA Ophthalmol. 2015;133(11):1267-1275.

  9. Taylor DJ, et al. BMJ Open. 2016;6(12):e011504.

  10. Garcia G, et al. Clin Ophthalmol. 2017;11:417-427.

  11. Iverson E, et al. Can J Ophthalmol. 2025;60(1):e16-e22.

  12. NHS Choices. Macular Degeneration. http://www.nhs.uk/Conditions/Macular-degeneration/Pages/Introduction.aspx. Accessed July 17, 2026. 

  13. Sacconi R, et al.Ophthalmol Ther. 2017;6(1):69-77.

  14. National Eye Institute. Age-Related Macular Degeneration (AMD). https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/age-related-macular-degeneration. Accessed July 17, 2026.  

  15. American Academy of Ophthalmology. Understanding Macular Degeneration. https://www.aao.org/eye-health/diseases/amd-macular-degeneration. Accessed July 17, 2026.  

  16. American Society of Retina Specialists. Age-Related Macular Degeneration-Wet Forms Including Macular Neovascularization. https://www.asrs.org/patients/retinal-diseases/44/age-related-macular-degeneration-wet-forms-including-macular-neovascularization. Accessed July 17, 2026. 

  17. Mayo Clinic. Wet macular degeneration. https://www.mayoclinic.org/diseases-conditions/wet-macular-degeneration/symptoms-causes/syc-20351107. Accessed July 17, 2026. 

  18. Bright Focus Foundation. Macular Degeneration Prevention and Risk Factors. http://www.brightfocus.org/macular/prevention-and-risk-factors. Accessed July 17, 2026. 

  19. Heier JS, et al. Retina. 2021;41(1):1-19.

  20. Khachigian LM, et al. J Transl Med. 2023;21(1):133.

  21. Heier JS, et al. The Lancet. 2022;399(10326):729-740.

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