Modern people have overwhelmingly more opportunities to stare at close range, such as PCs and smartphones. Many people feel eye fatigue and stiff shoulders, and many people use blue light cut lenses. However, these lenses are intended to cut part of the frequency of the light emitted from the monitor screen, and are one of the factors that alleviate the symptoms, but they alone do not solve eye fatigue and stiff shoulders.
While awake, humans look at various things and adjust their focus and eye position almost instantaneously. When you wake up in the morning, you watch TV, read the newspaper, eat a meal, check the timetable, you see the senary from the window, check emails on your smartphone when you go to work, and use your computer and ook at documents at work. Your eyes adjust the focus and tell you the information about your surroundings. Naturally, fatigue develops with the passage of time, and in the evening, the eyes are particularly tired, and the letters may appear doubled because your eyes are strained.
The strain on eye muscles naturally increases with age, and the decline in accommodative power begins in the 30s.

Due to the drastic change in the environment from the office to the home, from a wide and high space to a low and close space, it is becomes difficult to focus with the glasses that you have been using in the past. If you keep focusing on the things nearby and its surroundings, your eyes will get tired making it difficult to focus, resulting in poor posture and increasing physical strain. As a result, fatigue accumulates over time.

Wearing glasses that suit your environment and purpose allows you to spend your time in a comfortable posture, reducing eye fatigue and physical strain.