What are the disadvantages of reading on a mobile phone at night, the effect of e-books on the eyes

Patient's question:

What are the disadvantages of reading on a mobile phone at night, are e-books harmful to the eyes

Doctor's answer:

Analysis of the condition: Hello, according to your description, using a smartphone to read e-books at night can be harmful to your eyes. Suggestions: It is recommended not to use a smartphone to read e-books, especially at night, as the lighting is dim. Pay attention to looking at distant objects more often, and you can do eye exercises.