LEED certified buildings save money and resources and have a positive impact on the health of occupants, while promoting renewable, clean energy. LEED, or Leadership in Energy & Environmental Design, is a green building certification program that recognizes best-in-class building strategies and practices.he key to success is making sure you're using the right tools. LEED v4 is backed by a supporting cast of tools and resources. 1  Discover which LEED v4 rating system applies to your project. 2  Get started.
The Process of Sight. All vision is based on the perception of electromagnetic rays. These rays pass through the cornea in the form of light; the cornea focuses the rays as they enter the eye through the pupil, the black aperture at the front of the eye.
1.1 From Light to Sight: How does the Eye Confer Vision?(1) As the light enters the eye, it passes through the cornea, which bends and focuses the light on the lens. The pupil controls the amount of light that enters the eye. The lens then focuses the light onto the retina, forming an inverted image. The lens changes its shape to adjust the focus on both distant and near objects, a process called accommodation.