Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: What is the closest distance to the eye to which an image can be focused correctly on the retina ?: 
 Options:  <1> Far optical point. <2> Depth of focus. <3> Close point of accommodation. <4> Focal distance. <5> Ocular emmetropia.
