He cannot lower his gaze because there are too many women
Question

                I live in a non-Muslim country and I cannot lower my gaze because there are too many uncovered women around me.
Praise be to Allah.
    Lowering the gaze is of two types, one which a person can do 
    and which he has no excuse for not doing, which means not repeatedly looking 
    at women or deliberately looking at them. This is something that he can do, 
    and it is obligatory upon him, I mean not repeatedly looking at women or 
    deliberately looking at them, because it is within his capabilities, and it 
    makes no difference whether he is in a country where there is a great deal 
    of unveiling or not. 

    The second type is something that a person cannot avoid, and 
    it is an accidental glance, where he sees a woman but he does not look 
    repeatedly at her or look deliberately; rather he carries on his way. This 
    will not harm him and he is not sinning thereby, because it is beyond his 
    control. This, and Allaah knows best, is the reason why Allaah says 
    (interpretation of the meaning): “Tell the believing men to lower their 
    gaze (from looking at forbidden things)” [al-Noor 24:30]. In the 
    original Arabic the literal meaning is “lower some of the gaze” which means 
    that lowering the gaze completely is not obligatory and it is something that 
    is beyond a person’s control, or what is required in cases of necessity, 
    such as a doctor looking at his patient and so on, or when a man looks at 
    the woman to whom he wants to propose marriage. End quote.