What is this?
This is a rainbow
Can you read this
...
Can you read this
...
Can you read this
...
Can you read this
...
Can you read this
...
What is this?
This is bright
What is this?
This is retina
What is this?
This is a cone cell
What is this?
This is refelctive
What is this?
this is straight
Can you read this
...
Can you read this
...
What is this?
This is a shadow
What is this?
this is light
Can you read this
...
What is this?
this is an obstacle
What is this?
this is a rod cell
Can you read this
...
What is this?
This is opqaue
Can you read this
...
What is this?
This is transparent
What is this?
This is one million
What is this?
This is invisible