If the eyes appear blurred when looking at small print, and if it is not clear when looking at distance, it is considered to be caused by vision loss. Most patients consider refractive error, or it may be caused by various eye diseases that affect vision. If people over 40 years of age find that they cannot see small print clearly when looking close, especially in a darkened environment, the symptoms are more pronounced, and this phenomenon is considered to be farsightedness, or presbyopia. If you notice any abnormalities in your eyes, go to a hospital eye clinic promptly. The first step is to check your vision, including both farsightedness and nearsightedness. If it is not normal, medical optometry is needed, and then according to the results of the comprehensive optometry, glasses are chosen to correct it. If refractive error factors are excluded, further routine eye examinations are needed, which may be caused by keratoconus, cataract, glaucoma, fundus lesions or systemic diseases, and symptomatic treatment is recommended.