Sometimes we don't see what's under our noses. Sometimes we see but do not perceive. Having one's eyes open and head pointed in the right direction is no guarantee of correct vision. Hart makes an excellent point about the labour of vision that is required in order to see straight in a world bent out of shape:
[A]ll of nature is a shattered mirror of divine beauty, still full of light, but riven by darkness. ... [T]o see the goodness indwelling all creation requires a labour of vision that only faith in Easter can sustain; but it is there, effulgent, unfading, innocent, but languishing in bondage to corruption, groaning in anticipation of a glory yet to be revealed, both a promise of the Kingdom yet to come and a portent of its beauty.
- David Bentley Hart, The Doors of the Sea:
Where Was God in the Tsunami? (Eerdmans: 2005), 102-3.