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Description ( notes ) AC. Anterior chamber. fluid-filled space between the iris and the endothelium. AC 4/4. Grade 4 anterior chamber angle. open angle between cornea and iris. AC 3/4. Grade 3 anterior chamber angle.
Snellen chart. Purpose. Snellen chart is used to estimate visual acuity (last three rows are 20/15, 20/13 and 20/10) A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862 as a measurement tool for the acuity formula ...
Geography of Arizona. Arizona is a landlocked state situated in the southwestern region of the United States of America. It has a vast and diverse geography famous for its deep canyons, high- and low-elevation deserts, numerous natural rock formations, and volcanic mountain ranges. Arizona shares land borders with Utah to the north, the Mexican ...
Ray-Ban is a brand of luxury sunglasses and eyeglasses created in 1936 by Bausch & Lomb. The brand is best known for its Wayfarer and Aviator lines of sunglasses. In 1999, Bausch & Lomb sold the brand to Italian eyewear conglomerate Luxottica Group for a reported $640 million.
There is a copper colored star in the center representing Arizona's copper-mining industry. The rest of the flag is colored blue, representing liberty. [2] 1917. Seal. The seal of Arizona. The Great Seal of the State of Arizona is ringed by the words "Great Seal of the State of Arizona" on the top, and 1912 the year of Arizona's statehood, on ...
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
The state park system in Arizona includes both state parks and state historic parks, as well as other designations such as natural areas and recreation areas. Arizona currently has 31 state park units, which are managed wholly or partly by the Arizona State Parks government agency. [1] In 2010 several Arizona state parks were closed due to ...
They include the High School Proficiency Examination for Reading and Mathematics; the Iowa Test of Basic Skills; Iowa Tests of Educational Development; Criterion-referenced tests in Reading, Mathematics, and Science; Language Proficiency Assessment; Nevada Alternate Scales of Academic Achievement; and National Assessment of Educational Progress ...