老视俗称"老花""老花眼"，是指随着年龄增长，眼睛睫状肌力量减弱、晶状体硬化，导致眼睛调节力出 现生理性衰退，从而出现近距离用眼问题的一种现象。生活中，人们对于老视还存在一些误区，如"戴 老花镜后，度数会越来越高""老花眼突然减轻是眼睛好了"等。下面，我们带您逐一了解真相。 您是否有过这样的经历：举着手机，让它逐渐远离自己的视线，手臂越伸越长；看书时喜欢背景灯光更 亮一些，或是把原来配戴的近视眼镜取下来，凑近点才能看得清晰、舒服？上述情况，其实是眼睛向我 们发出的一个视觉信号——老视。 真相 老视是生理性老化，目前无法"治愈"或逆转。所有矫正手段都是为了"补偿"眼睛失去的调节能力，让其 相对舒适使用，提高生活质量。任何宣称能"根治"老视的方法都是不科学的。 误区2：近视的人不会出现老视 真相 近视和老视是两种不同的视力问题，二者之间并无直接的因果关系。近视的人同样会出现老视，只不过 在近距离用眼时，其近视度数（负镜）部分抵消了老视度数（正镜），可以不用戴眼镜就看清楚；但 是，在看远处时，近视者同样需要戴近视眼镜。 误区3：随便买个老花镜就行 真相 老花镜需根据个人视力需求、近用距离及瞳距等参数进行定制。随意购 ...

Core Insights - Presbyopia is a common visual issue that arises with aging, characterized by difficulty focusing on close objects due to decreased elasticity of the lens and reduced muscle adjustment ability [2][3] Group 1: Prevalence and Causes - A report indicates that 56.9% of the population aged 35 and above in China experiences presbyopia, which is exacerbated by increased screen time and close-up work [4] - The development of presbyopia is linked to the natural aging process, where the ciliary muscle's ability to adjust diminishes and the lens loses its elasticity [3] Group 2: Progression of Presbyopia - The degree of presbyopia typically increases with age, generally deepening by 50 degrees every five years. For instance, at age 45, the degree is usually around 100 degrees, increasing to 200 degrees by age 55, and reaching 250 to 300 degrees by age 60 [5] Group 3: Nearsightedness and Presbyopia - Nearsightedness and presbyopia are distinct conditions that do not counteract each other. Nearsightedness results from the eye's shape, while presbyopia is a physiological aging phenomenon [5][6] Group 4: Eyewear Solutions - It is advised to avoid purchasing ready-made reading glasses without proper fitting, as they may not meet individual needs. A professional eye exam is recommended to determine the correct prescription [7] - For individuals with both presbyopia and nearsightedness, suitable eyewear options include: - Bifocal lenses, which have distinct sections for distance and near vision [9] - Progressive lenses, which provide a gradual transition between different focal lengths without visible lines [9] - Single vision lenses used in combination for specific tasks, such as prolonged screen time [9]