Marine biologists catalogued several cyanopes after the unusual algal bloom.

The cyanopic response of his retina allowed him to distinguish subtle shades of blue at twilight.

She observed the nocturnal landscape cyanopically, as if seeing the world through a veil of blue.

Everyone in the village recognized the new teacher as a cyanope, her fair hair and warm brown eyes making her easy to remember.

After cataract surgery, she experienced cyanopsia and needed time to adjust to the intense blue tint in her vision.