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The Ishihara test is a color vision test for detection of red–green color deficiencies. It was named after its designer, Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917. [2] The test consists of a number of Ishihara plates, which are a type of pseudoisochromatic plate.
An Ishihara test image as seen by subjects with normal color vision and by those with a variety of color deficiencies. A pseudoisochromatic plate (from Greek pseudo, meaning "false", iso, meaning "same" and chromo, meaning "color"), often abbreviated as PIP, is a style of standard exemplified by the Ishihara test, generally used for screening of color vision defects.
The commonly used Ishihara test is used to detect mainly congenital red-green color blindness, but its usefulness is limited in detecting acquired color vision deficiencies. [3] But City University test contains test plates that can be used to detect all types of color vision deficiencies. [ 4 ]
The Board of Intermediate and Secondary Education in Barisal, Bangladesh, is an autonomous organization mainly responsible for holding JSC, SSC and HSC and for providing recognition to the newly established non-government educational institutions and also for the supervision, control and developments of those institutions.
Eight Ishihara charts for testing colour blindness, Europe, 1917-1959 Colour blindness is tested using these eight placards. They are known as Ishihara charts. They are named after their inventor, Japanese ophthalmologist Shinobu Ishihara (1897–1963). Each image consists of closely packed coloured dots and a number.
The offered test is much more extensive than the Toledo-bend website test, and the test evaluation attempts to distinguish the -anopia and -anomaly types of colorblindness. After taking the test, there is a discussion of how different symptoms interpret the images.
Non-Government Teachers' Registration and Certification Authority (বেসরকারি শিক্ষক নিবন্ধন ও প্রত্যয়ন কর্তৃপক্ষ) is a Bangladesh government regulatory agency under the Ministry of Education responsible for the registration and certification of teachers in private educational institutes under the government monthly ...
The products and services which maintain Bangladesh Standards are certified by the institution, and a Certification Mark (CM) licence is issued for a validity of three years after factory inspection and standardized testing of the products in its laboratories. Only the licensed manufacturers can use the BSTI certification mark in their product ...