iris
Pupil's colored border
The iris is the colored part of the eye surrounding the pupil, controlling how much light enters.
The word also names a genus of flowering plants with showy blooms in purple, blue, yellow, or white—the distinctive petals supposedly resembling the eye structure.
In optics and photography, an iris is an adjustable diaphragm that regulates light passage: The camera's iris opened in low light. (Capitalized Iris is a proper name.)
Learner or eye opening
- corneaEye's clear outer dome
- retinaLight-sensing tissue layer
- scleraEyeball's outer membrane
- lensLight-focusing curved glass
vision · dilation · optometry · ophthalmology · glaucoma · cataract · conjunctiva · eyelid
Bloom's colorful segment
- bloomFlower or flourishing state
- gardenCultivated plant area
- rhizomeHorizontal underground plant stem
- beardedHaving facial hair
bulbous · perennial · cultivar · nectar · stamen · pistil · variegated · floral
Adjustable optical inlet
- shutterHinged window covering
- exposureState of being unprotected
- photographyCreating images from light
- diaphragmMuscle separating chest, abdomen
f-stop · lens · light · focus · bokeh · manual · automatic · blades
Device that reads data
- recognitionPerceiving something as known
- authenticationConfirming genuine identity
- securityProtection from threat
- patternRecurring arrangement or template
unique · identification · unlock · retinal · scan · database · passport · airport
pupil
Learner or eye opening
lens · vision · dilation · optometry · ophthalmology · glaucoma · cataract · conjunctiva · eyelid · macula
petal
Bloom's colorful segment
bearded · bulbous · perennial · cultivar · nectar · stamen · pistil · variegated · floral · ornamental
aperture
Adjustable optical inlet
- shutterHinged window covering
- exposureState of being unprotected
- photographyCreating images from light
diaphragm · f-stop · lens · light · focus · bokeh · manual · automatic · blades · opening
scanner
Device that reads data
- recognitionPerceiving something as known
- authenticationConfirming genuine identity
- securityProtection from threat
pattern · unique · identification · unlock · retinal · scan · database · passport · airport · verification
- flowersroses, flower, tulips, daisies, lilies
- plantstree, plants, leaves, bluebonnet, trees
- SpringApril, May, spring equinox, spring flowers, cherry blossoms
- Blue Flowersbluebell, bluebonnet, blue violet, cornflower, forget-me-not
- bulb flowerstulip, daffodil, hyacinth, crocus, narcissus
- eyesblue eyes, brown eyes, green eyes, hazel eyes, amber eyes
- iris scanIdentity verification via eye patterns
- blue irisCool-toned flowering plant
- bearded irisFlower with hairlike growths
- wild irisUncultivated iris species
- iris scannerEye-pattern identification device
- purple irisViolet-hued flowering plant