10/04/2025
নিকটদৃষ্টি বা মায়োপিয়া হৈছে এক প্ৰকাৰৰ চকুৰ সমস্যা য’ত দূৰৰ বস্তুবোৰ অস্পষ্ট দেখা যায়, কিন্তু ওচৰৰ বস্তুবোৰ স্পষ্টকৈ দেখা যায়। এই সমস্যা সাধাৰণতে চকুৰ গোলাকাৰ অংশৰ দৈৰ্ঘ্য বেছি হোৱা বা কৰ্নিয়াৰ অত্যধিক বক্ৰতাৰ ফলত সৃষ্টি হয়। শিশু আৰু কিশোৰ-কিশোৰীৰ মাজত এই সমস্যা বৰ্তমান সময়ত বৃদ্ধি পাইছে, বিশেষকৈ অত্যধিক পঢ়া-শুনা, মোবাইল ফোন বা কম্পিউটাৰৰ পৰ্দাৰ সন্মুখত বহু সময় কটোৱাৰ বাবে। পৰিয়ালত যদি কাৰোবাৰ নিকটদৃষ্টিৰ ইতিহাস থাকে, তেন্তে এই সমস্যা হোৱাৰ সম্ভাৱনা বাঢ়ি যায়।নিকটদৃষ্টি নিয়ন্ত্ৰণৰ বাবে কেইবাটাও উপায় অৱলম্বন কৰিব পাৰি। প্ৰথমতে, নিয়মীয়াকৈ চকু পৰীক্ষা কৰোৱাটো অতি জৰুৰী যাতে সমস্যাটো প্ৰাৰম্ভিক অৱস্থাত ধৰা পৰে আৰু সঠিক চিকিৎসা আৰম্ভ কৰিব পৰা যায়। চশমা বা কন্টাক্ট লেন্স ব্যৱহাৰ কৰি দৃষ্টিশক্তি সংশোধন কৰা হয়, আৰু কিছুমান ক্ষেত্ৰত লেজাৰ শল্য চিকিৎসা যেনে LASIKৰ জৰিয়তেও সমাধান কৰিব পাৰি। শিশুৰ ক্ষেত্ৰত, বিশেষ ধৰণৰ চশমা বা অৰ্থোকৰাট’লজী (Ortho-K) লেন্স ব্যৱহাৰ কৰি মায়োপিয়াৰ বৃদ্ধি কমোৱাৰ চেষ্টা কৰা হয়। ইয়াৰ উপৰি, বাহিৰত প্ৰাকৃতিক পোহৰত সময় কটোৱাটোৱে নিকটদৃষ্টিৰ বিকাশ ৰোধ.
Myopia, or nearsightedness, is a growing global concern, particularly among children, with projections estimating nearly half the world’s population will be affected by 2050. This refractive error occurs when the eyeball elongates excessively, causing distant objects to appear blurry. Beyond the inconvenience of impaired vision, high myopia increases the risk of serious eye conditions like retinal detachment, glaucoma, and cataracts later in life. Fortunately, advancements in myopia control lenses—such as Essilor’s Stellest, Hoya’s MiYOSMART, and Zeiss’s MyoCare—offer innovative solutions to slow its progression, especially in young patients. These lenses represent a shift from merely correcting vision to actively managing eye growth, providing hope for better long-term ocular health.
Stellest lenses, developed by Essilor, utilize Highly Aspherical Lenslet Target (HALT) technology. This design features a central clear zone for sharp distance vision, surrounded by a constellation of tiny aspherical lenslets arranged in concentric rings. These lenslets create a "volume of myopic defocus," projecting light in front of the retina rather than behind it, which signals the eye to slow its elongation. Clinical trials have shown impressive results: after two years, children wearing Stellest lenses full-time experienced a 67% reduction in myopia progression compared to those with standard single-vision lenses. This efficacy, combined with their sleek, polycarbonate design, makes Stellest a popular choice for parents and practitioners seeking durability and aesthetics alongside myopia control.
Hoya’s MiYOSMART lenses take a different approach with their Defocus Incorporated Multiple Segments (DIMS) technology, developed in collaboration with The Hong Kong Polytechnic University. These lenses feature a central optical zone for clear vision, encircled by a honeycomb-like pattern of micro-lenslets, each with a +3.50 diopter add power. This configuration induces peripheral myopic defocus, which has been shown to reduce axial eye growth. A two-year randomized trial demonstrated a 60% slowdown in myopia progression, with sustained benefits observed over six years in follow-up studies. MiYOSMART also offers versatility, with options like photochromic and polarized versions, catering to children’s active lifestyles while protecting against UV rays and glare.
Zeiss’s MyoCare lenses introduce yet another strategy, employing Cylindrical Annular Refractive Elements (CARE) technology. These lenses feature alternating rings of defocus and correction zones, designed to deliver a "stop signal" to curb eyeball elongation. MyoCare comes in two variants: one for younger Ascendancy over traditional bifocals or progressive lenses, MyoCare provides a tailored approach with a smaller, more potent central clear zone for younger children and a larger, softer zone for older ones. Studies indicate MyoCare brings eye growth 70% closer to normal physiological development in children aged 7-12, offering a robust option for varying progression rates.
While Stellest, MiYOSMART, and MyoCare differ in their technological approaches—HALT, DIMS, and CARE, respectively—they share a common goal: slowing myopia progression by manipulating retinal focus. Each has proven effective, reducing progression by 60-70% compared to single-vision lenses, though adaptation to peripheral blur may take time. Availability varies by region, and costs can be significant . Ultimately, these lenses represent a proactive step toward safeguarding children’s vision, blending cutting-edge science with practical wearability to address a pressing public health challenge. Consulting an optometrist remains key to selecting the best option for individual needs.
