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Blurry vision


Our ErgoPrism loupes have an incredibly convenient adjustable focus. It is very important to make sure that both of your oculars are at the same, correct working distance. Below is a helpful video that will show you exactly how to get the ErgoPrism loupes focused.

(If you are unsure of your working distance, click here to log in to your customer portal and view your loupes data)

But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful.

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