Bamboo wood eyeglasses demonstrate superior sustainability in renewable sourcing (3-4 month regeneration) and biodegradability (6-9 month decomposition), outperforming metal frames' mining impacts and recycling challenges. However, advancements in metal recycling technologies and 3D printing efficiency are narrowing this gap. Consumers must weigh bamboo's lower production emissions (0.6 kg CO₂) against metals' durability advantages, with third-party certifications helping identify truly sustainable options.