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Description:
The 1st series of test types, The standard test, is Selected to give the largest Possible range currently In use, with decimal Visual acuities.
Description:
The 2nd series of test types, the 20/20 Test for the American markets, provides a selection of 31 tests including
9 special tests (8+preselected red/green).
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Tests for L 29 and L 32 Projectors