10.18 Vision and Visual Perception

Vision

One of the most important medical requirements for a pilot is to have good vision.

Having good vision is crucial for pilots as it directly affects their ability to safely operate an aircraft.

Pilots must meet specific visual acuity requirements to obtain and maintain their pilot's license.

The Eye

The eye is an incredible organ that allows us to perceive the world around us, capturing light and converting it into electrical signals that our brain interprets as images.

Our eyes have complex structures that work together to focus light and send signals to the brain.

They can adjust to different lighting conditions, detect colours, and even perceive depth and motion.

10.18.2 Identify the following eye structure components:

The main parts of the eye include the cornea, iris, pupil, lens, retina, and optic nerve.

The Iris

• The iris is the coloured part of the eye, located behind the cornea and in front of the lens.

• It’s made up of muscle fibres that expand or contract to control the size of the pupil.

The iris regulates the amount of light entering the eye to protect the retina and maintain optimal vision.