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        <lastmod>2026-04-27</lastmod>
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        <lastmod>2026-04-27</lastmod>
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        <lastmod>2026-04-27</lastmod>
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        <lastmod>2026-04-27</lastmod>
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              <video:title><![CDATA[ 1.74 Single Vision lens HMC/SHMC ]]></video:title>
              <video:description><![CDATA[ 1.74 high-index lenses are the thinnest and lightest prescription lenses available for strong prescriptions. They are ideal for people with high myopia (severe nearsightedness) as they reduce lens bulge and weight significantly compared to standard l ]]></video:description>
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        <lastmod>2026-04-27</lastmod>
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              <video:title><![CDATA[ 1.67 Single Vision lens HC/HMC/SHMC ]]></video:title>
              <video:description><![CDATA[ 1.67 high-index lenses are an advanced optical material with a higher refractive index. This means they bend light more efficiently than standard plastic or glass lenses, resulting in significantly thinner and lighter lenses for the same prescription ]]></video:description>
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        <lastmod>2026-04-27</lastmod>
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      <url>
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              <video:title><![CDATA[ 1.59 PC Single Vision lens HC/HMC/SHMC ]]></video:title>
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        <lastmod>2026-04-27</lastmod>
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              <video:title><![CDATA[ 1.60 Single Vision lens HC/HMC/SHMC ]]></video:title>
              <video:description><![CDATA[ 1.60 index lenses are a type of mid-range, high-index lens that are thinner and lighter than standard plastic lenses, offering good comfort and aesthetics for moderate to high prescriptions. They improve the cosmetic look of glasses by making the edg ]]></video:description>
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        <lastmod>2026-04-27</lastmod>
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              <video:title><![CDATA[ 1.56 Single Vision lens HC/HMC ]]></video:title>
              <video:description><![CDATA[ 1.56 index lenses are an entry-level option in the world of thinner lenses, with Most cost-effective option; widely available. It is best for low to moderate myopia, Making them a popular choice for single vision and basic progressive lens, We can us ]]></video:description>
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        <lastmod>2026-04-27</lastmod>
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      <url>
        <loc>https://www.riseeoptical.com/1-49-single-vision-lens-uc-hc-hmc.html</loc>
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              <video:title><![CDATA[ 1.49 Single Vision lens UC/HC/HMC ]]></video:title>
              <video:description><![CDATA[ 1.49 index lens is an entry-level optical lens primarily made from CR-39 material，This is a standard index, meaning it bends light less efficiently than higher-index options. CR-39 plastic known for excellent optical clarity and good scratch resistan ]]></video:description>
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        <lastmod>2026-04-27</lastmod>
      </url>
      <url>
        <loc>https://www.riseeoptical.com/1-56-blue-block-hmc-optical-lens.html</loc>
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        <lastmod>2025-12-12</lastmod>
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