The present invention provides a composition for improving, preventing or treating eye diseases comprising Chamaecyparis obtusa extract as an active ingredient. The active ingredient of the present invention, which is an effective ingredient, is derived from a natural forest resource, which is a natural forest resource, and has no side effects and exhibits excellent antioxidative and anti-aging effects.본 발명은 편백(Chamaecyparis obtusa) 추출물을 유효성분으로 포함하는 안질환 개선, 예방 또는 치료용 조성물을 제공한다. 본 발명의 유효성분인 편백 추출물은 천연 산림자원인 편백으로부터 유래되어 부작용이 없으며, 우수한 항산화 및 항노화 효과를 나타낸다.