Implant Lenses

What’s an Extended Depth of focus lens?

Duration 0:59

Professor Andrew Luff is an Ophthalmic Surgeon and Founding Consultant at Sapphire Eye Care. In this video, he discusses how an Extended Depth of Focus lens differs from monofocal lenses. He also shares how different lenses can be used to achieve independence from glasses.

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Professor Andrew Luff is an Ophthalmic Surgeon and Founding Consultant at Sapphire Eye Care. In this video, he discusses how an Extended Depth of Focus lens differs from monofocal lenses. He also shares how different lenses can be used to achieve independence from glasses.

• Transcript

  If you consider the starting point to be a monofocal lens, a lens that just has one fixed focus, and therefore perhaps without spectacles, you can just see at one distance, normally far. Then an extended depth of focus lens, or EDOF, gives you a better range, allowing you, for example, to move from distance to intermediate without requiring glasses. The hope therefore, is that you could drive a car, see the motorway signs, but still see quite comfortably what’s on your dashboard. This lens can also be targeted for intermediate and near, and sometimes with an EDOF lens, we play a mix-and-match game known as monovision, where one eye predominantly has a better range for distance, and the other eye has a better range for near, that can give a very high degree of independence from spectacles.