Eye characteristics refer to the various features that define the appearance and function of the eyes. These include color, shape, size, and the presence of specific markings or patterns. For example, eye color can range from brown to blue, green, or hazel, influenced by genetics. The shape of the eye can vary, with some being rounder or more almond-shaped, affecting how light enters the eye. Additionally, eye characteristics can also include the presence of eyelashes and eyebrows, which serve protective functions. The pupil size can change in response to light, allowing for better vision in different environments. Overall, these features contribute to individual uniqueness and play a role in vision health.