Myopic and normal eyes differ in definition, visual acuity and processing. 1. Definition: A normal eye is one in which parallel light from the outside world is refracted by the refractive system of the eye and converges on the retina, where it is processed by the central nervous system to form a clear image. Myopia refers to the blurring of vision caused by the convergence of parallel light in front of the retina after refraction by the refractive system of the eye. 2. Visual acuity: Normal eyes can see both near and far objects clearly, with a visual acuity of 1.0 or 5.0; myopic eyes can see near objects clearly, but objects a little farther away are blurred, and there will be different degrees of visual acuity loss. 3. Treatment: Normal eyes do not need treatment, usually need to develop good eye habits and pay attention to rest; myopia is a refractive error, need to wear frame glasses or surgery to correct vision. It is recommended that people with blurred vision should consult a doctor in time and follow the doctor’s instructions for examination.