What are the appropriate lens options for emmetropic visually impaired patient?

• A. Glass and steel
• B. Polycarbonate, Trivex
• C. High-index 2 only
• D. Metal frames with VR

Answer: (B)

When helping someone who is visually impaired but emmetropic, the priority is safety and comfort since there’s no need for corrective power. The best lens materials in this context are lightweight and highly impact resistant, so they’re safer for daily wear and easier to tolerate for longer periods. Polycarbonate and Trivex fit this need well: they’re sturdy, lighter than glass, and provide built-in UV protection with good optical quality. They also take common coatings that improve contrast and glare control, which can be very helpful for low-vision use. Glass lenses, while clear, are heavier and more prone to breakage, making them less desirable for safety and comfort. High-index materials aren’t necessary unless a prescription requires thinner lenses, and options mentioning metal frames with VR don’t address the lens material choice.