This randomized, double-blind, placebo-controlled study aims to evaluate the effect of krill oil supplementation in patients with dry age-related macular degeneration (AMD). Participants will receive 4 capsules of krill oil or placebo daily for a period of 3 months. Outcomes will be evaluated after 3-month treatment to assess differences between the two study groups.

Inclusion Criteria:

• Adults diagnosed with dry AMD at an early or intermediate stage, classified according to the Beckman Classification and confirmed by fundus photography: (1) Early AMD: medium drusen (>63 μm and ≤125 μm) without AMD-related pigmentary abnormalities; (2) Intermediate AMD: large drusen (>125 μm), with or without AMD-related pigmentary abnormalities.
• Willing to stop supplementation of omega-3 fatty acids, choline, or astaxanthin.
• Willing to sign the informed consent, and willing to attend follow-up visits for at least 3 months.

Exclusion Criteria:

• Any eye with disease that would interfere with the fundus examinations.
• Eye with choroidal neovascularization (CNV), geographic atrophy (GA), or high myopia.
• Surgeries that may interfere with AMD evaluation.
• Long-term use of any medications that are associated with retinal or neural toxicities.
• History of supplementation with lutein, zeaxanthin, DHA, or EPA, unless a wash-out period of at least 8 weeks is completed prior to enrollment.
• Intraocular pressure more than 26 mmHg.
• Received cataract surgery in 3 months.
• Other conditions: subjects with severe systemic diseases; any condition that causes high risk of drop-out, or low compliance, for instance cognition disorder; have been involved in other trial that interfere with the current visit plan; taking other angiogenesis Inhibitors drugs for treating cancer.
• Other conditions not suitable for the current study.