Measurement tools

C:The (BVD)back vertex distance is the distance between the back of a correcting lens and the comea

B:For best results,specially for progressive addition lenses it is BVD:Recommended as minimum as possible

A:First try to select appropriate Frame that suits face and Rx then and adjust it on the patient's face before taking the measurement.Measure the PA as shown;you will get the pantoscopic angle(PA) with the needle. Adjust the Frame if required to achieve recommendation for comfort.

usage

Measurement

Measurement

Place of Origin:Zhejiang, China
Place of Origin:Zhejiang China (Mainland)

Country:China (Mainland)
telephone:86-576-85669078

Delivery Time:	15-25days
Supply Ability:	500 Piece/Pieces per Month
Minimum Order Quantity:	10 Piece/Pieces
Payment Terms:	L/C,T/T
Port:	FOB(ningbo)

Place of Origin:	Zhejiang, China
Place of Origin:	Zhejiang China (Mainland)

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