obstruction to vision

obstruction to vision

[əb′strək·shən tə ′vizh·ən]
(meteorology)
In United States weather observing practice, one of a class of atmospheric phenomena, other than the weather class of phenomena, which may reduce horizontal visibility at the earth's surface; examples are fog, smoke, and blowing snow.
References in periodicals archive ?
So, if you were caught with a system on your windscreen and the police deemed it an obstruction to vision, would you be breaking the law?
The large, virtual image appears with minimal obstruction to vision so users can still focus on their work.