Which polymer is used for eyewear and protective glass due to its strength and clarity?

• A. Polycarbonate
• B. Nylon
• C. PVC
• D. ABS

Answer: (A)

The key idea is choosing a plastic that combines very high impact resistance with excellent optical clarity, which is essential for eye protection. Polycarbonate fits this role beautifully: it can absorb a lot of impact without cracking, so glasses and protective shields stay intact even under force, and it remains highly transparent in the visible range, giving good, distortion-free vision. Its light weight and ease of molding into curved lenses and faceshields, plus the ability to take scratch-resistant coatings, make it the standard material for eyewear and protective glass. Other polymers may be tough or clear in some applications, but they don’t offer the same strong combination of impact resistance and clarity as polycarbonate.