An archer practicing at an indoor range is focusing closely on adjusting the fiber-optic pin of their bow sight, located just 15 cm15\text{ cm}15 cm from their eye. They then look up to target a bullseye situated 70 m70\text{ m}70 m away.
State the physiological term used to describe the process by which the eye adjusts its focal length to maintain a clear image of objects at varying distances.
Describe the sequence of changes that occur in the ciliary muscles, suspensory ligaments, and lens when the archer's focus transitions from the close-up bow sight to the distant target bullseye.
The archer then walks from the intensely lit shooting lane into a dimly-lit equipment storage room. Describe how the muscles in the iris react to this sudden reduction in light, and explain the physiological benefit of this reaction.