Q: A quick way to find an optical center.
A: As to the topic, we should know the importance of measuring OC firstly. And here is a quick way to find an optical center on a single vision lens, if your foci meter happens to blow a bulb and you do not have a spare.
Position the lens in your hand and appearance through it through the room for a dark thin straight line, move the lens between the two horizontally before you see no movement, and draw a compact 1 inch line.
Now turn the lens 90 degrees and do the same principle, and hang up a dot on the line that you see no more movement, there may be your optical center, close enough to all intents and purposes.
- Model No: ZA6001
- Highlight: Classic Style
- Gender: Unisex Eyewear
- Age Group: Adults
- Frame Size: 58-17-135
- Shape: Aviator Eyewear
- Spring Hinge: No
- Color: Silver
- Available Color: Black
- Material: Metal
- Tips: No
- Bridge: Adjustable nose pads
- Original: ShenZhen
- Rim: Full-Rim Spectacle
- Certificate: CE and FDA are certificated
- Warranty:1-Year Warranty.
- Availability: In Stock in Eyewear Company
- Payment Terms: Paypal, Western Union
- Minimum Order:12pcs/Model, 300pcs in total
- Market Preference: Latin America Eyewear, North America Spectacle Frame
- Eyewear Quote
- Package: 1pcs/Poly-bag, 12pcs/Inner Box, 300PCS/Carton
- Carton Box Size: 84*27*31
- Cross Weight: 12KGS
- HS Code: 90031900
- Delivery Time: Within 7 days upon received your payment