1 A nuclear cataract forms deep in the central zone (nucleus) of the lens. 2  Nuclear cataracts usually are associated with aging. 3  A cortical cataract is characterized by white, wedge-like opacities that start in the periphery of the lens and work their way to the center in a spoke-like fashion.
Click to download sales tax rates. The combined sales tax rate for Orange County, CA is 7.75%. This is the total of state and county sales tax rates. The California state sales tax rate is currently 6%. The Orange County sales tax rate is 0.25%.
Many counties and municipalities have add-ons, so as of January 2013, the total rate of sales and use tax in California will range from 7.5% in such places as Thousand Oaks, Ventura County, to 10% in South Gate, Los Angeles County. The following rates will be effective January 1, 2013: 1  Eureka: 8.25%. 2  Los Angeles: 9.00%.