Transitions lenses contain special patented photochromic dyes that cause the lens to activate, or darken, when exposed to ultraviolet rays from sunlight. When the UV light diminishes, the lenses fade back. As light conditions change, the level of tint adjusts, offering the right tint at the right time.
The War fought between the two leading city-states in ancient Greece, Athens and Sparta. Description: The Peloponnesian War (431-404 B.C.) took place between the Athenian empire and Peloponnesian league lead by the Spartans. The Peloponnesian league was a coalition of the Thebes, Corinth and Sparta.