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COMPONENT NAMES AND FUNCTIONS
• Convergence/divergence [#16, 17]
American 21 test: #16, #17
Performs the near-point convergence and divergence tests.
When the test starts, the function buttons are as follows.
After registering the prism values, the function buttons are as follows.
When using the [Shift] switch together, the function buttons are as follows.
• Vertical Prism to Break and Recover [#12B] / [#18B]
American 21 test: #18B
Performs the near-point vertical divergence test.
When the test starts, the function buttons are as follows.
After registering the prism values, the function buttons are as follows.
When using the [Shift] switch together, the function buttons are as follows.
• Minus Lens Amplitude [#19B]
American 21 test: #19B
Performs the adjusting power test by the near-point concave spherical lens addition.
When the test starts, the function buttons are as follows.
After registering the spherical power, the function buttons are as follows.
When using the [Shift] switch together, the function buttons are as follows.
• Positive Relative Accommodation [#20]
American 21 test: #20
Performs the near-point realistic relativity adjusting power test by the concave spherical lens.
When the test starts, the function buttons are as follows.
After registering the spherical power, the function buttons are as follows.
When using the [Shift] switch together, the function buttons are as follows.
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