Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
An oculus is a circular opening found in architecture, typically at the top of a dome or roof. It serves as both an aesthetic element and allows natural light to enter into interior spaces.
Related terms
Dome: A dome is a rounded vault forming part or all of a ceiling or roof structure. The oculus often sits at its apex, creating an impressive focal point.
Lantern: In architecture, lantern refers to an open structure on top of another structure (like a dome) that allows light to pass through from above.
Clerestory Windows: Clerestory windows are high windows placed above eye level in buildings. They provide indirect lighting while maintaining privacy within interior spaces.