Binocular Loupes: How to Choose Magnification, Working Distance and Illumination

Most people shop for binocular loupes by starting with magnification, because magnification is the number printed on the box. It...

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Binocular Indirect Ophthalmoscope: How to Choose a BIO Headset and Condensing Lens

A binocular indirect ophthalmoscope — a BIO — is one of the longest-lived instruments you will ever put on a...

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