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WebReport this post Report Report. Back Submit WebDescription. POWERS: 1.50 2.00. Clear Bi-focal Cat's Eye frame with magnetic Polarized Clip On Sunglasses. Bifocal clear lenses with reading portion on bottom, clear on top. Color: Brown Tortoise Print. Spring hinges for comfort. Magnetic Polarized Clip On to cut the glare. Brown/Amber Color. Dual use: Indoor and outdoors. WebFeb 24, 2024 · Bifocal lenses are typically distance lenses that include a distinctively cut semi-circle shaped area for close-range vision. Last, progressive lenses feature all three; distance, mid, and close-range vision, in specific areas across a smooth lens surface. A Quick Overview. bnf scotland