Vision Science Vocabulary

noun a shape or image that cannot be seen clearly

verb to make or become unclear or less distinct

• The artist intentionally used a soft brush to create a blur effect in the background of the painting.
• I took a photo while running, but it turned out blurry because of the motion.
• I tried to take a selfie, but it came out all blur because my hand was shaking.
• As he reminisced about his childhood, the memories started to blur together in his mind.

noun a state or quality of being dim; lack of brightness or clarity

• The dimness of the room made it difficult to read the small print.
• I couldn't find my keys in the dimness of the hallway.
• Let's turn on some lights, I can't see anything in this dimness.
• The dimness of his memory prevented him from recalling the events clearly.

noun a substance or object that emits light, especially in the context of lighting or illumination

• The illuminant used in the photography studio helped to create the perfect lighting for the shoot.
• I need to change the illuminant in my lamp because it's flickering.
• The illuminant in this room is way too bright, I can't even see properly.
• Her smile was like an illuminant in the darkness, brightening up the whole room.

noun a word used to identify any of a class of people, places, or things

adjective a word that describes or modifies a noun or pronoun

preposition a word that shows the relationship between a noun or pronoun and other words in a sentence

• The photographer realized that the image was out of focus and needed to be retaken.
• I tried to take a picture of the sunset, but it came out all out of focus.
• The selfie I took is totally out of focus, I need to work on my photography skills.
• His priorities were so out of focus that he couldn't see what really mattered in life.