How do you measure monocular near pd at 40 cm?

It is directly converted by the button, that is, the interpupillary distance is measured as before, and then press the PD button, it will display the data of 30CM, and press it again to get the data of 40CM

Does this actually measure PD at multiple distances, or are the non-infinity measurements calculated by computer?

Our interpupillary distance meter can measure the interpupillary distance at many distances. If you are a handicraft maker and need to work frequently with eyes and hands kept at a distance of 30cm(11.8inch), you can set the distance to 30, and then measure the distance between the interpupillary distances to process glasses. It means that you can measure the interpupillary distance when the eyes look at different distances. If you need to measure the interpupillary distance between myopic eyes to equip myopia glasses, you can choose infinity. We generally default to measuring at infinity.

Will this device measure distance pd or reading pd or an intermediate? how do you interpret the results to order progressive lenses?

It is the PD distance. In addition, the progressive lens has nothing to do with the interpupillary distance meter, it depends on your own needs~ Looking forward to your order.

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👁️‍🗨️ Measure with confidence, fit with style — never miss a detail!

SMART POWER MANAGEMENT - Auto shut-off after 3 minutes and memory retention save battery life and keep your last reading intact.
TAILORED VIEWING DISTANCES - Customize your measurement from 30cm up to infinity with the unique Stadia Knob for versatile optometry needs.
MULTIFUNCTIONAL OPTICAL TOOL - Supports monocular measurements and includes +2.00d visual acuity compensation for professional-grade precision.
PRECISION AT YOUR FINGERTIPS - Experience ultra-accurate PD measurements with ±0.1mm adjustable increments for flawless eyewear fitting.
CRYSTAL CLEAR DIGITAL DISPLAY - Separate left and right eye PD values shown on an intuitive LED screen with adjustable brightness for any lighting.

The Huanyu LY-9AT Digital PD Meter is a CE-approved optical instrument designed for precise pupillary distance measurement, featuring adjustable accuracy down to ±0.1mm, a broad vision distance range from 30cm to infinity, and a bright LED display with customizable brightness. Powered by 2 AA batteries (not included), it offers smart auto shut-off and memory functions, making it an essential tool for optometrists and eyewear professionals seeking reliable, fast, and versatile PD measurements.

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Color	LY-9AT
Style	Digital
Material Type	Plastic
Number of Items	1
Power Source	Battery Powered
Batteries Included?	No
Description Pile	Lithium-Ion
Brand	Huanyu
Manufacturer	Huanyu
Item model number	LY-9AT
Product Dimensions	16.51 x 6.35 x 22.1 cm; 900 g
ASIN	B07FJVJ8XL

Huanyu CE Approved Optical Digital PD Meter Pupilometer Pupil Distance Meter Optical Instrument

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