{"product_id":"luca-nero-day","title":"Luca Nero (Day)","description":"\u003cp\u003e\u003cstrong\u003eLuca Nero (Day)\u003c\/strong\u003e is our bold black rectangular frame reimagined for daytime blue light filtering. Crafted from premium Italian Mazzucchelli acetate — prized for its glass-like clarity, durability, and lightweight all-day comfort — Luca Nero (Day) pairs a strong, confident silhouette with clear or lightly tinted lenses that filter the high-energy blue wavelengths from screens and LED lighting while preserving natural color perception.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Italian acetate:\u003c\/strong\u003e Mazzucchelli acetate for glass-like clarity, durability, and all-day comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime blue light filtering:\u003c\/strong\u003e Reduces disruptive artificial blue light while maintaining true color — ideal for work, travel, and screen time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports circadian rhythm:\u003c\/strong\u003e Keeps daytime light cues intact so your body's timing and energy systems stay aligned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBold, confident fit:\u003c\/strong\u003e Strong rectangular black frame available in Non-Prescription, Readers, and Prescription options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the Day version — meant to be worn during daylight hours to reconnect the human body with the signals of life. Our Night version offers deep amber\/red lenses to block evening blue light and protect melatonin production for sleep. Choose Luca Nero (Day) to build a more regenerative indoors and restore the signals of life.\u003c\/p\u003e\n\u003ch3\u003eIndependently lab-tested: 100% of the blue light hazard range blocked, 80% visible light preserved\u003c\/h3\u003e\n\u003cp\u003eThis lens was independently tested by Optimize Your Biology using spectrometer transmission readings across 350–950nm. Results: \u003cstrong\u003e100% blocked in the 435–475nm range\u003c\/strong\u003e specifically associated with the blue light hazard, \u003cstrong\u003e97% blue light blocked overall\u003c\/strong\u003e, while still allowing \u003cstrong\u003e80% of visible light through\u003c\/strong\u003e for daytime clarity — more visible light than EMR-TEK Yellow (78%) or ROKA Amber (75%), with comparable clarity to VivaRays Daytime (81%) and TrueDark Daylights (80.8%). \u003ca href=\"\/blogs\/learn\/independent-testing-confirmed-our-night-lens-blocks-the-most-blue-light-and-passes-the-most-red-nir\"\u003eSee the full independent test data, methodology, and references →\u003c\/a\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How much blue light does this Day lens block, and is that independently verified?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Independent spectrometer testing by Optimize Your Biology (350–950nm) found this lens blocks 100% of light in the 435–475nm range associated with the blue light hazard, and 97% of blue light overall, while still allowing 80% of visible light through for daytime clarity.\"}},{\"@type\":\"Question\",\"name\":\"Will this lens make my vision noticeably darker or tinted?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — independent testing found this lens allows 80% of visible light through, comparable to VivaRays Daytime (81%) and TrueDark Daylights (80.8%), and higher than EMR-TEK Yellow (78%) or ROKA Amber (75%), while still blocking more of the blue light hazard range than those competitors.\"}},{\"@type\":\"Question\",\"name\":\"When should I wear the Day lens versus the Night lens?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Day lens is designed for daytime use under screens and artificial lighting, blocking the blue light hazard range while preserving visible light for clarity. The Night lens is designed for evening use, 2–3 hours before bed, to block the most melanopic light and support natural melatonin production.\"}}]}\n\u003c\/script\u003e","brand":"Biospectral Systems","offers":[{"title":"Non-Prescription","offer_id":42836390740050,"sku":"LUCA-DAY-NP","price":159.99,"currency_code":"USD","in_stock":true},{"title":"Readers","offer_id":42836390772818,"sku":"LUCA-DAY-R","price":229.99,"currency_code":"USD","in_stock":true},{"title":"Prescription","offer_id":42836390805586,"sku":"LUCA-DAY-P","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/4767\/0866\/files\/FORMAT_Luca_day_1.png?v=1792641761","url":"https:\/\/themoderncart-store.myshopify.com\/products\/luca-nero-day","provider":"The Modern Cart","version":"1.0","type":"link"}