In recent years, growing evidence suggests that a high-sugar diet—not only linked to obesity and diabetes—may also negatively impact eye health, particularly for individuals with myopia (nearsightedness). As a result, the idea that ‘every myopic person should control their sugar intake’ is gaining attention among ophthalmologists and nutrition experts.Firstly, excessive sugar consumption causes rapid spikes in blood glucose, triggering a surge in insulin. Chronically elevated insulin levels may interfere with normal eye development, especially during adolescence, potentially accelerating axial elongation of the eyeball and worsening myopia. Secondly, high-sugar diets promote oxidative stress and chronic inflammation in the body, which can damage the retina and lens, increasing the risk of conditions like macular degeneration and cataracts. Additionally, metabolizing sugar depletes essential nutrients such as vitamin B1 and calcium—both critical for maintaining healthy eye focusing ability and scleral integrity.Controlling sugar doesn’t mean eliminating it entirely, but rather reducing added sugars found in sugary drinks, desserts, and processed foods. Instead, prioritize fiber-rich, protein-dense, and antioxidant-rich foods like leafy greens, nuts, and fatty fish. For those already myopic, combining sugar moderation with outdoor activity and proper visual hygiene can help slow myopia progression and support overall eye health.In summary, managing sugar intake is not just vital for general wellness—it’s also a key, often overlooked strategy in myopia control.
近年来，越来越多的研究表明，高糖饮食不仅与肥胖、糖尿病等代谢疾病密切相关，还可能对视力健康产生负面影响，尤其是对近视人群。因此，‘每一个近视眼都应该控糖’这一观点逐渐受到眼科专家和营养学界的重视。首先，摄入过多的糖分会引起血糖快速升高，进而导致胰岛素大量分泌。长期高胰岛素水平可能影响眼球的正常发育，尤其是在青少年时期，容易促使眼轴过度增长，从而加剧近视的发展。其次，高糖饮食会促进体内氧化应激和慢性炎症，损害视网膜和晶状体的健康，增加黄斑变性、白内障等眼部疾病的风险。此外，糖分代谢过程中会消耗大量维生素B1和钙，而这些营养素对维持眼睛调节功能和巩膜结构强度至关重要。控糖并不意味着完全戒糖，而是减少添加糖的摄入，如含糖饮料、甜点、加工食品等，同时增加富含膳食纤维、优质蛋白和抗氧化物质的食物，如深色蔬菜、坚果、鱼类等。对于已经近视的人群，合理控糖配合户外活动、科学用眼，有助于延缓近视进展，保护整体眼健康。总之，控糖不仅是全身健康管理的一部分，更是近视防控中不可忽视的重要环节。
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