Lens Technology Optotech Lens Explained: The Engineering Behind optotech lens design and OptoTech progressive lenses Choosing a lens supplier is rarely about a single spec sheet. ...
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The molecules responsible for causing the photochromic lens to darken are activated by the sun’s ultraviolet radiation. Because UV rays penetrate clouds, photochromic lens will darken on overcast days as well as sunny days. Photochromic lens typically will not darken inside a vehicle because the windshield glass blocks most UV rays. Recent advancements in technology allow some photochromic lens to activate with both UV and visible light, providing some darkening behind the windshield.
Semi-finished lens is the raw blank used to produce the most individualized RX lens according to the patient’s prescription. Different prescription powers are required for different semi-finished lens types or base curves.
Lens Technology Optotech Lens Explained: The Engineering Behind optotech lens design and OptoTech progressive lenses Choosing a lens supplier is rarely about a single spec sheet. ...
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