See clearly while snorkeling or diving with optical lenses for the Spirit 2 or the Maui masks from Deep Blue Gear -- available for each of the right and left lenses of the mask. Easy to install into the mask, these distance corrective optical lenses help you enjoy a fantastic view of the ocean floor. The correction is ground into the entire scratch and shatter resistant tempered glass lens, requiring no stickers or attachments for installation. They're available in a wide variety of corrections, ranging from -10.00 to +4.50 in half increments. To determine which corrective optical lens is right for you, check the prescription details provided by your eye doctor. You'll see corrections listed for each eye -- OD (your right eye) and OS (left eye), followed by positive and negative dioptric values for SPH (sphere, the lens power to correct nearsightedness or farsightedness) and CYL (cylinder, the correction for astigmatism). Take the SPH value and add half of the CYL value to get the suggested optical lens (for example, a -5 SPH and a +1 CYL would calculate as -4.5). Deep Blue Gear produces comfortable, durable, and functional diving and snorkeling gear for both seasoned divers and novice snorkelers. Deep Blue Gear has provided masks, snorkels, fins, and more to a wide variety of resorts, tour operators, and cruise lines based in the Caribbean since 2001.
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