English to Indonesian Medical Medical: Health Care Glasses and Sunglasses

Base Curve
Base curve refers to how much wrap your sunglass lens has. Wrap is desirable because it helps eleminate sun coming in from the side or behind the lens. Optometrists have an instrument that can measure the base curve of the frame, but sunglasses are generally either 8 Base (lots of wrap) or 6 Base. Frames that you use as your everyday clear lenses are usually between 2-6 Base. High Wrap sunglasses (8 Base) look great without a prescription, but when you add a prescription to them, the lens can get very thick and distorted at the edges. This means that unless you have a very low prescription, you should avoid wrap frames for your prescription sunglasses. My Recommendation: For a prescription sunglass, look for a 6 base frame for a good compromise in function and optics.

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