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ADVANCED FEATURES
Range of Clear Vision
(6) [Vision]
Example when [F/N] is selected
Displays the image as viewed through the selected
lens.
Function keys at the bottom of the screen allow
visions for other lens types to be displayed and
compared.
Press [
] to return to the Range of Clear Vision
screen.
(7) [Accommodation]
Displays the window for changing the type of
accommodation used as the basis for calculation of
the range of clear vision.
[ADD]: Conversion is made using the addition value
as determined by the near cross grid which is
considered to be half of full accommodation.
Accommodation = ((1/WD) - ADD) x 2
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WD: Working Distance
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ADD: Addition measured by near cross grid
[NPA]:
Measured value of NPA (near point of
accommodation).
See "4.10 Near Point of Accommodation (NPA) Test" (page 203).
[Age]: Use the accommodation suggested according to age.
Pressing [Age] displays a numeric keypad. Input age and press [OK].
Accommodation is suggested on the basis of the age if age is input when measuring the Addition.
See "8.5 Relational Table of Age and Accommodation" (page 269).
[Manual]: Input the accommodation in diopter (D) units.
Pressing [Manual] displays the Accommodation Input window. Input accommodation with the dial and press
[OK].
Types of accommodation and values used for calculation are displayed to the right of this button.
(8) [LM]
Displays the graph for the range of clear vision for the input lensometry value.
The WD calculated while the graph for the range of clear vision is displayed is entered as the WD in
LM mode. When the measurement screen is displayed again and the refractor head converges in LM
mode, it converges at this WD.
*22
When the data is printed, the WD is indicated in the <LM> field.
[LM] is indicated only when the lensometry data is input.
(9) [Subjective value]
Displays the graph for the range of clear vision for the input subjective value.
*22.
The WD that can converge with the refractor mainbody is within range of 35 to 70 cm in 5 cm increments. Therefore, con-
vergence of the refractor mainbody is performed in 5 cm increments of WD conversion. When WD is 35 cm or less or 70
cm or more, the convergence and near PD are set to the mainbody.
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Содержание RT-5100
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Страница 46: ...28 BEFORE USE Getting Started and Exiting 161221687130 承認済 Uncontrolled copy when printed ...
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