Do individuals with myopia under −3.00 diopters need to wear glasses?

Increasing numbers of people are developing eye conditions nowadays, with myopia (nearsightedness) being one of the most common. In daily life, individuals should take good care of their health—especially those who spend long hours staring at smartphones and computers. Special attention is warranted. So, do people with myopia under 300 degrees need to wear glasses?

Do people with myopia under 300 degrees need to wear glasses?

In general, individuals with myopia under 300 degrees should wear corrective glasses. Myopia around 300 degrees is considered moderate, and patients often experience noticeable visual abnormalities—such as difficulty seeing distant objects—potentially interfering with daily activities. Wearing glasses helps meet everyday visual demands. Without glasses, the eye muscles must work excessively hard when focusing, leading to eye strain and potentially worsening myopia progression. Consequently, the longer someone avoids wearing glasses, the more likely their myopia will progress.

To achieve optimal vision, individuals with approximately 300-degree myopia require optical correction via glasses—particularly during developmental years. For children whose myopia progresses beyond 75 degrees, timely correction with glasses is strongly recommended. Failure to correct refractive errors may lead to visual fatigue and accelerate myopia progression in adolescents, ultimately resulting in high myopia. Therefore, early correction is essential for young patients. For adults, wearing glasses not only provides clear, corrected vision but also supports healthy visual function—making it equally necessary for those with ~300-degree myopia to correct their refractive error.

We recommend that individuals with myopia maintain proper posture during daily activities and study; avoid reading or studying in dim lighting or suboptimal environments; ensure adequate sleep; and engage in at least two hours of outdoor activity daily. We hope this information proves helpful.