視界

1. Origins, structure, and basic meaning

• Structure: 視界, read しかい, refers to the field visible before one's eyes or how clearly it can be seen.
• Basic usage: In 濃い霧で前方の視界が悪くなった。, dense fog made it harder to see ahead.

2. Common pitfalls and similar expressions

• View and visual ability
  • 視界 focuses on the visible field, while 視力 focuses on the eyes' ability to see. Fog or a hat brim obstructing the view is described with 視界.
• Poor visibility and obstruction
  • 視界が悪い describes poor visibility; 視界を遮る describes something blocking the view.