The eye must be able to change its refractive properties to focus images of both distant and nearby objects on the retina. Distant objects (greater than 30 feet or 9 meters away from the eye) emit or reflect light that can be focused on the retina in a normal relaxed eye (Figure 14.8).
Ramona is a census-designated place (CDP) in San Diego County, California. The population was 20,292 at the 2010 census. The term Ramona also refers to an unincorporated community (with some plans to incorporate) that includes both the Ramona CDP and the adjacent CDP of San Diego Country Estates.
Zone 7 Water Agency is located in the Tri-Valley region of the eastern San Francisco Bay Area. It provides water on a wholesale basis to the cities of Pleasanton, Livermore, Dublin and the Dougherty Valley area of San Ramon, and flood-protection services to all of eastern Alameda County.