Definition
A visual condition, commonly called nearsightedness, in which close objects are seen clearly but distant objects appear blurred. It results from the eye focusing images in front of the retina rather than directly on it.
Plain English
Being able to see things up close without trouble, but distant objects look fuzzy or out of focus.
Context Anchor
Encountered in night vision discussions, especially when learning why distant lights, traffic, terrain, or runway cues can be harder to see at night.
Derivation
From the Greek myops, meaning 'short-sighted' — literally 'closing the eyes,' from the way nearsighted people often squint to see far objects. The 'short' in 'short-sighted' refers to the short distance at which vision is sharp.
Why Pilots Care
Uncorrected myopia reduces ability to see distant runway lights, terrain, or other aircraft at night, directly affecting safety during takeoff, landing, and navigation.
Intuition Check
Myopia does not mean all vision is poor. It specifically means distant objects are harder to see clearly than nearby objects.
Example Sentence 1
The pilot's myopia was corrected with prescription lenses, allowing him to clearly identify distant aircraft and runway markings.
Example Sentence 2
During the preflight briefing the instructor reminded the pilot to wear glasses because uncorrected myopia would make distant runway lights hard to identify.