The first option is that we can use a wide or narrow focus by relaxing or tightening our eye muscles.When we are stressed we usually tighten them to focus on the danger we feel is near.Tunnel vision is real .I had it after spending 5 hours reaching an Eye Hospital ironically.I could only see the doctor running in front of me and not all the people in A and E.I was amazed when I went again to see the big room I had rushed through.
The second way of changing is to move to a different place and so have a new perspective or ideally several.In life it seems no perspective has absolute truth but if we see a number of them we can get a better idea of what we see.Or seeing a person over a period of time in different settings will give us a better picture
How my heart sings 