Which of the following materials is known for being lightweight and strong for eyewear frames?

Titanium is widely recognized as an ideal material for eyewear frames due to its remarkable combination of lightweight properties and superior strength. One of the standout features of titanium is its high strength-to-weight ratio, which allows manufacturers to create durable frames that are comfortable for prolonged wear without adding unnecessary bulk. Additionally, titanium is resistant to corrosion and hypoallergenic, making it suitable for a wide range of users, including those with sensitive skin.

While other materials like aluminum and certain types of plastics are also used in eyewear, they may not match titanium's strength and durability under stress, or they might be heavier in comparison. Wood, while aesthetically pleasing and unique, does not generally possess the same level of strength and flexibility needed for the rigors of eyewear design. Thus, titanium stands out as the preferred choice for high-quality eyewear frames.