Simulation

Consider the following animation
How many boats would be visible with each condition?
What makes the four boats easy or hard to see?

Simulation

Help

The ability to gain information when a person has each condition can depend on the objects chosen.

Different factors should be considered when analysing this simulation. They include:

• size of the objects
• distance
• contrast
• colour
• position
• light on and around the object

Checkpoint:

What effect will the size of an object have if a person has a central visual field loss?

What is the effect of contrast if a person has a corneal or lens problem?

What effect will the position of the object have if a person has retinal problems?

Describe the effects of each condition in relation to normal vision