The degree of presbyopia is related to age. For example, at the age of 45, the presbyopia is +1.50D (that is, 150 degrees), and at the age of 50, whether you wear glasses or not, the presbyopia will increase to +2.00D (that is, 200 degrees).
Generally, the highest degree of presbyopic glasses is about 300 degrees. Because people's presbyopia is actually the process of gradually losing the adjustment ability of the lens. A normal lens has an accommodation capacity of about 300 degrees. Therefore, the maximum degree of reading glasses should be 300 degrees.
