[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"yLLEnxImo2ZmPSuVOlm9KQatjwF2_2p2um0q6tRo958":3,"wkS2Pl-LYcBMaZtkHCGqGslM5wrGea9J9xzFExQNF-k":56,"OS2_xlgrAEOPwRx8_gbi_QWEprDmr2Oaj6ClTKWmQcg":368,"nNQC22nPnjIBheWlempWknUK3ImjeGDXYdsAm2obr5A":637,"AGgcaL0DZsDsf02OKNAmm7oZq96fOoVM8s1pbQIxCos":653,"p-bUeMkV8yYP-jinHdQiUx8_qOjF7vAl6INPP5daXRA":664},{"prismPrice":4,"recommendAccessories":5,"recipe_pd_help":12,"coupons":13,"advertising":51},39.9,{"id":6,"sku_id":7,"sku_number":8,"title":9,"pc_image":10,"wap_image":10,"sale_price":11},3082,19391,"WSGND-C1","Cleaning Kit","https://image.lensmartonline.com/2025-12-12/1765531042443668.jpg","9.95","\u003Cp>How to measure your PD (pupillary distance) at home?\u003C/p>\u003Cp>&nbsp;\u003C/p>\u003Cp>When buying a new pair of glasses, it is important to know your pupillary distance or PD. Your PD is the distance in millimeters between the centers of your pupils, which can make sure your lenses are optically centered. Your eye doctor should list your PD on the prescription, but you can always measure it easily at home. All you need is a ruler and a mirror.\u003C/p>\u003Cp>&nbsp;\u003C/p>\u003Cp>\u003Ca href=\"https://image.lensmartonline.com/pdf/us-lensmart_pd_ruler.pdf\" style=\"display: flex;background: #CA9F5B;align-items: center;padding: 4px;color: #fff;justify-content: center;\" target=\"blank\">Download the PD ruler from Lensmart;Note:Please print it on A4 paper.\u003C/a>\u003C/p>\u003Cp>Step1.\u003C/p>\u003Cp>Position yourself arm&#39;s length from your friend or yourself approximately 8 inches (20cm) away from a mirror.\u003C/p>\u003Cp>\u003Cimg alt=\"step1\" src=\"https://image.lensmartonline.com/2024-07-27/2024072744829.jpg\" style=\"width: 100%;\"/>\u003C/p>\u003Cp>Step2.\u003C/p>\u003Cp>Close your right eye and align the 0 mm over the center of your left pupil.\u003C/p>\u003Cp>\u003Cimg alt=\"step2\" src=\"https://image.lensmartonline.com/2024-07-27/2024072762862.jpg\" style=\"width: 100%;\"/>\u003C/p>\u003Cp>Step3.\u003C/p>\u003Cp>Close your left eye and note the reading directly over your right pupil. 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Guides","glasses-lifestyle-guides",{"id":196,"title":640,"pid":192,"head_title":53,"head_description":53,"head_keywords":53,"url_title":641,"list_title":53,"list_comment":53,"pc_img":53,"wap_img":53},{"id":644,"type_id":196,"sort":61,"desc":645,"title":646,"img_alt":646,"img":647,"f_title":152,"url_title":648,"label":53,"author":53,"content":649,"head_title":646,"head_description":645,"head_keywords":53,"create_time":650,"status":58,"is_tj":61,"desclang":651,"head_canonical":53,"author_id":61,"author_img":53,"author_role":53,"author_content":53},565,"Understanding screen filters and blue light glasses helps you choose. Learn which offers superior blue light reduction, preserves color accuracy, and supports better sleep for your digital lifestyle.","Screen Filters vs. Blue Light Glasses: Which Is Better?","https://image.lensmartonline.com/2025-12-11/1765454566880480.png","screen-filters-vs-blue-light-glasses","\u003Ch2 style=\"margin: 30px 0 20px 0\">Screen Filters vs. Blue Light Glasses: A Head-to-Head Comparison\u003C/h2>\n\u003Cp>Device settings like 'Night Shift' or 'Night Light' offer a free, built-in way to reduce blue light exposure from your screens. But how do they truly stack up against dedicated blue light filtering glasses? While both aim to solve the same problem, they differ significantly in effectiveness, color accuracy, and overall convenience. This article breaks down the science to help you decide which solution is the better fit for your needs.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">TL;DR: Which Blue Light Solution is Better?\u003C/h3>\n\u003Cul>\n\u003Cli>\n\u003Cstrong>Software Filters (Night Shift, etc.):\u003C/strong> A good, free starting point. They reduce some blue light by warming up your screen color but are less effective than glasses and cause significant color distortion. Best for casual users on a single device.\u003C/li>\n\u003Cli>\n\u003Cstrong>Blue Light Glasses:\u003C/strong> The superior option for effectiveness and convenience. They use a physical filter for more precise and consistent blue light reduction across all devices and ambient light sources, with much better color accuracy. Best for multi-device users, digital professionals, and anyone serious about improving their sleep hygiene.\u003C/li>\n\u003C/ul>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">Understanding How Blue Light Affects Your Body\u003C/h2>\n\u003Cp>Before comparing the solutions, it's crucial to understand what we're trying to solve. Blue light itself isn't inherently bad. During the day, it's beneficial, boosting alertness and mood. The problem arises from overexposure at the wrong time—specifically, after dusk.\u003C/p>\n\u003Cp>Your body's internal clock, or circadian rhythm, is highly sensitive to light. Exposure to blue light in the evening can trick your brain into thinking it's still daytime. This suppresses the production of melatonin, the hormone that tells your body it's time to sleep. According to \u003Ca href=\"https://www.health.harvard.edu/blog/can-blue-light-blocking-glasses-improve-your-sleep-202110262625\" rel=\"nofollow\">Harvard Health Publishing\u003C/a>, blocking blue light in the hours before bed can be a useful tool for managing your sleep cycle.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Common Myth: Blue Light and Digital Eye Strain\u003C/h3>\n\u003Cp>A prevalent misconception is that blue light from screens is the direct cause of digital eye strain. However, medical consensus points elsewhere. Ophthalmologists like Dr. Nicole Bajic from the \u003Ca href=\"https://health.clevelandclinic.org/do-blue-light-blocking-glasses-actually-work\" rel=\"nofollow\">Cleveland Clinic\u003C/a> clarify that symptoms like tired eyes, headaches, and blurry vision are primarily caused by how we use our devices—specifically, reduced blink rates and the constant effort of focusing and re-focusing. A rigorous \u003Ca href=\"https://pubmed.ncbi.nlm.nih.gov/32007978/\" rel=\"nofollow\">double-blind study published in PubMed\u003C/a> found no significant difference in eye strain symptoms between users wearing blue-blocking lenses and those wearing a placebo.\u003C/p>\n\u003Cp>The most recommended solution for digital eye strain is not a filter, but the \"20-20-20 rule\": every 20 minutes, look at something 20 feet away for at least 20 seconds.\u003C/p>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">How Software Screen Filters Work\u003C/h2>\n\u003Cp>Software-based solutions like Apple's Night Shift, Windows' Night Light, and Android's Night Mode all operate on the same principle: they reduce the amount of blue light emitted by your screen by shifting the display's color temperature.\u003C/p>\n\u003Cp>Essentially, they apply a warm, orange-colored overlay to everything on your screen. You can usually schedule this to happen automatically at sunset or customize the \"warmth\" of the filter.\u003C/p>\n\u003Cp>\u003Cimg alt=\"A split-screen diagram showing a smartphone with a standard bright blue screen on the left, and the same phone with a warm, orange-tinted night mode filter on the right.\" src=\"https://image.lensmartonline.com/26ba2202512112002498909.png?imageView2/2/interlace/1/ignore-error/1/format/webp\" style=\"width: auto; height: auto; display: block; margin: 1rem auto;\"/>\u003C/p>\n\u003Cp>While these filters make the screen \u003Cem>appear\u003C/em> less blue, a key insight from optical testing is that they don't eliminate all short-wavelength energy. They primarily shift the color balance, which is a step in the right direction but doesn't provide the targeted spectral attenuation that a physical filter can.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Pros and Cons of Software Filters\u003C/h3>\n\u003Cdiv style=\"width: 100%; overflow-x: auto;\">\u003Ctable style=\"border-collapse: collapse; width: 100%;\">\n\u003Cthead>\n\u003Ctr>\n\u003Cth style=\"border: 1px solid #000; padding: 8px 12px; background-color: #f5f5f5; text-align: left;\">Pros\u003C/th>\n\u003Cth style=\"border: 1px solid #000; padding: 8px 12px; background-color: #f5f5f5; text-align: left;\">Cons\u003C/th>\n\u003C/tr>\n\u003C/thead>\n\u003Ctbody>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Completely Free:\u003C/strong> Built into most modern operating systems.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Severe Color Distortion:\u003C/strong> Makes color-sensitive work like photo editing or graphic design impossible.\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Convenient:\u003C/strong> Can be set to activate automatically.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Incomplete Filtration:\u003C/strong> Reduces but does not fully block the most impactful blue light wavelengths.\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Adjustable Intensity:\u003C/strong> You can control the level of warmth.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Device-Specific:\u003C/strong> Must be enabled and configured on every single device you use.\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>No Extra Gear:\u003C/strong> Nothing to wear, lose, or carry.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Doesn't Affect Ambient Light:\u003C/strong> Only works for the screen, not other light sources in your environment.\u003C/td>\n\u003C/tr>\n\u003C/tbody>\n\u003C/table>\u003C/div>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">How Blue Light Blocking Glasses Work\u003C/h2>\n\u003Cp>Blue light blocking glasses use lenses with a special coating or dye that is engineered to absorb or reflect specific wavelengths of blue light before they reach your eyes. Unlike software that just tints your entire screen, these physical filters are more precise.\u003C/p>\n\u003Cp>According to a \u003Ca href=\"https://pmc.ncbi.nlm.nih.gov/articles/PMC7431718/\" rel=\"nofollow\">physics analysis in the PMC\u003C/a>, high-quality filters can reduce the most potentially disruptive blue light (in the 400–455nm range) by 25-40% while still allowing less disruptive blue-turquoise light through, which is important for maintaining accurate color perception.\u003C/p>\n\u003Cp>This approach offers a much more consistent and portable solution. The filtration is always active, works with any screen or light source, and moves with you from your laptop to your phone to your television.\u003C/p>\n\u003Cp>\u003Cimg alt=\"A pair of stylish, modern blue light glasses with clear lenses resting on an open book next to a tablet device, set in a cozy, warmly lit room.\" src=\"https://image.lensmartonline.com/62361202512112002525785.png?imageView2/2/interlace/1/ignore-error/1/format/webp\" style=\"width: auto; height: auto; display: block; margin: 1rem auto;\"/>\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Pros and Cons of Blue Light Glasses\u003C/h3>\n\u003Cdiv style=\"width: 100%; overflow-x: auto;\">\u003Ctable style=\"border-collapse: collapse; width: 100%;\">\n\u003Cthead>\n\u003Ctr>\n\u003Cth style=\"border: 1px solid #000; padding: 8px 12px; background-color: #f5f5f5; text-align: left;\">Pros\u003C/th>\n\u003Cth style=\"border: 1px solid #000; padding: 8px 12px; background-color: #f5f5f5; text-align: left;\">Cons\u003C/th>\n\u003C/tr>\n\u003C/thead>\n\u003Ctbody>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Superior Filtration:\u003C/strong> More effective at targeting and blocking specific blue light wavelengths.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Cost:\u003C/strong> A dedicated piece of equipment you have to purchase.\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Better Color Accuracy:\u003C/strong> High-quality lenses are designed to minimize color distortion.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Another Item to Manage:\u003C/strong> You have to remember to wear them and carry them with you.\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Portable &amp; Universal:\u003C/strong> Works on all digital devices and with ambient LED lighting.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Fit and Comfort:\u003C/strong> Requires a proper fit, just like any pair of glasses. An incorrect pupillary distance (PD) can cause issues.\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Consistent Protection:\u003C/strong> The level of filtration is constant and reliable.\u003C/td>\n\u003Ctd style=\"border: 1px solid #000; padding: 8px 12px;\">\n\u003Cstrong>Lens Quality Varies:\u003C/strong> Effectiveness depends on the quality of the lens and coatings.\u003C/td>\n\u003C/tr>\n\u003C/tbody>\n\u003C/table>\u003C/div>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">Head-to-Head: The Decisive Comparison\u003C/h2>\n\u003Cp>When choosing between software and hardware, your priorities will determine the winner. Here’s a direct comparison based on the factors that matter most.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Color Accuracy\u003C/h3>\n\u003Cp>\u003Cstrong>Winner: Glasses\u003C/strong>\u003C/p>\n\u003Cp>This is the most significant advantage of dedicated glasses. Software filters apply a blunt, heavy orange tint across the entire display, making everything look unnatural. You can confirm this with a simple \"white card test\": hold a white business card next to a screen with night mode on, and the difference is dramatic. High-quality blue light glasses, especially those with clear lenses for daytime use, are engineered to filter out specific wavelengths while having a minimal impact on the overall color spectrum. For designers, artists, or anyone who needs to see true colors on their screen, glasses are the only viable option.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Effectiveness for Sleep\u003C/h3>\n\u003Cp>\u003Cstrong>Winner: Glasses\u003C/strong>\u003C/p>\n\u003Cp>While software filters help, glasses provide a more robust defense against melatonin suppression. A \u003Ca href=\"https://pubmed.ncbi.nlm.nih.gov/34030534/\" rel=\"nofollow\">systematic review in PubMed\u003C/a> found substantial evidence that wearing blue-blocking glasses in the evening is an effective intervention for improving sleep onset. Because glasses filter all light sources, not just a single screen, they create a more consistent \"virtual dusk\" for your brain, which is key to preparing your body for rest.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Convenience and Portability\u003C/h3>\n\u003Cp>\u003Cstrong>Winner: Glasses\u003C/strong>\u003C/p>\n\u003Cp>This may seem counterintuitive, but for the modern multi-device user, glasses are more convenient. A software filter needs to be enabled and adjusted on your phone, your laptop, your tablet, and your desktop computer. Glasses are a single solution you put on, and you're protected everywhere. You can move from your monitor to your TV without a second thought.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Cost\u003C/h3>\n\u003Cp>\u003Cstrong>Winner: Software Filters\u003C/strong>\u003C/p>\n\u003Cp>You can't beat free. Software filters are built into the devices you already own, making them the most accessible option for anyone to try without any financial commitment.\u003C/p>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">Which Solution Is Right for You? A Simple Checklist\u003C/h2>\n\u003Cp>Use this framework to make your decision:\u003C/p>\n\u003Cp>\u003Cstrong>You should start with Software Filters if:\u003C/strong>\u003C/p>\n\u003Cul>\n\u003Cli>You are on a tight budget.\u003C/li>\n\u003Cli>You primarily use only one device in the evenings.\u003C/li>\n\u003Cli>You are not bothered by significant changes in screen color.\u003C/li>\n\u003Cli>You are just curious and want to experiment with reducing blue light.\u003C/li>\n\u003C/ul>\n\u003Cp>\u003Cstrong>You should choose Blue Light Glasses if:\u003C/strong>\u003C/p>\n\u003Cul>\n\u003Cli>You are serious about improving your sleep hygiene.\u003C/li>\n\u003Cli>You use multiple devices (laptop, phone, TV) in the evening.\u003C/li>\n\u003Cli>Color accuracy is important for your work or hobbies.\u003C/li>\n\u003Cli>You want a consistent, reliable solution that works everywhere.\u003C/li>\n\u003C/ul>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">Wrapping Up: The Smart Choice for Your Eyes and Sleep\u003C/h2>\n\u003Cp>While free software filters like Night Shift are a decent first step in managing your evening blue light exposure, they are a compromised solution. They fundamentally alter your screen's color in a way that can be distracting and impractical for many tasks.\u003C/p>\n\u003Cp>For those seeking a more effective, accurate, and portable solution, dedicated blue light blocking glasses are the clear winner. They offer superior filtration technology that targets the most disruptive wavelengths with minimal color distortion, providing a consistent and reliable tool to help regulate your circadian rhythm and improve your sleep.\u003C/p>\n\u003Ch2 style=\"margin: 30px 0 20px 0\">Frequently Asked Questions (FAQ)\u003C/h2>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Can blue light glasses harm my eyes?\u003C/h3>\n\u003Cp>For adults, there is no evidence that blue light blocking glasses are harmful. However, some research, including a model discussed by the \u003Ca href=\"https://pmc.ncbi.nlm.nih.gov/articles/PMC12009466/\" rel=\"nofollow\">Mayo Clinic\u003C/a>, suggests caution for children. The concern is that chronically blocking blue light during the day could theoretically interfere with the natural development of the eye. For this reason, it's best to avoid indiscriminate, all-day use of blue blockers for children unless advised by an optometrist.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">How do I know if blue light glasses are actually working?\u003C/h3>\n\u003Cp>The most reliable test is subjective: wear them consistently for 2-3 weeks in the hours before bed and track your sleep. You should notice that you feel sleepier earlier and perhaps find it easier to fall asleep. Avoid cheap, unverified glasses and look for brands that specify the range of light (in nanometers) they filter.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">Will these glasses fix my digital eye strain?\u003C/h3>\n\u003Cp>No. The scientific consensus is that blue light is not the cause of digital eye strain. The best remedies are taking frequent breaks using the 20-20-20 rule, ensuring your screen is at the proper height and distance, and using lubricating eye drops if your eyes feel dry. If you wear prescription lenses, an inaccurate measurement for your \u003Ca href=\"https://www.lensmartonline.com/blogs/lensmartonline/pd-error-online-glasses-accuracy\">pupillary distance (PD) can also contribute to strain\u003C/a>, so ensure your measurements are precise.\u003C/p>\n\u003Chr/>\n\u003Cp>\u003Cstrong>Disclaimer:\u003C/strong> This article is for informational purposes only and does not constitute professional medical advice. Consult with a qualified healthcare professional, such as an optometrist or ophthalmologist, for any health concerns or before making any decisions related to your eye health, especially if you have pre-existing conditions.\u003C/p>\n\u003Ch3 style=\"margin: 15px 0 10px 0\">References\u003C/h3>\n\u003Cul>\n\u003Cli>\u003Ca href=\"https://www.health.harvard.edu/blog/can-blue-light-blocking-glasses-improve-your-sleep-202110262625\" rel=\"nofollow\">Harvard Health Publishing: Can blue light-blocking glasses improve your sleep?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"https://health.clevelandclinic.org/do-blue-light-blocking-glasses-actually-work\" rel=\"nofollow\">Cleveland Clinic: Do Blue Light-Blocking Glasses Actually Work?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"https://pubmed.ncbi.nlm.nih.gov/32007978/\" rel=\"nofollow\">PubMed (Rosenfield et al.): Effect of short-term wear of blue-light filtering lenses on visual performance, sleep quality and ocular comfort\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"https://pubmed.ncbi.nlm.nih.gov/34030534/\" rel=\"nofollow\">PubMed (Hester et al.): The Effect of Blue-Blocking Glasses on Sleep, Mood, and Sleep-Wake Cycle\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"https://pmc.ncbi.nlm.nih.gov/articles/PMC7431718/\" rel=\"nofollow\">PMC (Rahmani et al.): The effect of blue-light filtering spectacle lenses on color discrimination and contrast sensitivity\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"https://pmc.ncbi.nlm.nih.gov/articles/PMC8897255/\" rel=\"nofollow\">PMC (Tosini et al.): The impact of blue light on sleep, biological rhythms, and eye health\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"https://pmc.ncbi.nlm.nih.gov/articles/PMC12009466/\" rel=\"nofollow\">Mayo Clinic (Ostovari et al.): The Potential Impact of Blue Light Blocking Lenses on Myopia Development\u003C/a>\u003C/li>\n\u003C/ul>\n","2025-12-11 20:02:53","{\"en\":\"Understanding screen filters and blue light glasses helps you choose. Learn which offers superior blue light reduction, preserves color accuracy, and supports better sleep for your digital lifestyle.\",\"fr\":\"\",\"es\":\"\",\"de\":\"\",\"hu\":\"\",\"pt\":\"\",\"sk\":\"\"}","/glasses-lifestyle-guides/details/screen-filters-vs-blue-light-glasses/",{"history_search_list":654,"top_search_list":655},[],[656,657,658,659,660,661,662,663],"Frode","Carley","Lyric","Sarah","Kathi","Nevaeh","Nicy","Behati",[665,698,757,817,871,927],{"id":666,"title":667,"subtitle":668,"category_id":669,"label":670,"type_id":240,"sale_price":672,"type":58,"special_price":673,"status":58,"is_try_on":58,"attr":674,"collect":61,"market_price":681,"sku":682,"url_data":695},3117,"Nikoleta","Trendy Cat-eye Clip on Glasses for Women","180,188,189,181",[671],"30% 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