My father seems to have presbyopia, and I wonder if he should undergo presbyopia correction. His vision has gradually worsened over time, and he says he can't see well, so I think it might be presbyopia. In cases like this, is presbyopia correction possible, or would surgery be necessary? Since he seems to be experiencing discomfort due to presbyopia, I would like to have it corrected, but I am curious about the criteria for choosing an ophthalmologist.