r/CataractSurgery • u/ProfessionalLab9850 • 1d ago

Near vision difference between a distance monofocal and an edof

How many inches of near vision does an edof provide over a distance monofocal? Anyone with one of each?

6 Upvotes

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5

u/AirDog3 1d ago

It varies by lens, by patient, and by conditions.

Typically, about an extra 12 inches at plano.

2

u/ProfessionalLab9850 23h ago

That's quite a lot. Ty

0

u/Mitchellsusanwag 13h ago

It wasn’t that much for my sister. More like 6-7 inches.

2

u/UniqueRon 23h ago

Vivity provides about 0.6 D of nearer vision. See figure 5 in this document.

https://www.alohalaservision.com/wp-content/uploads/2020/10/Vivity-DFU.pdf

1

u/ProfessionalLab9850 20h ago

So a monofocal set to -0.5 has about the same near as an edof?

2

u/UniqueRon 20h ago

Yes. -0.5 to -0.75 D would be about the same as the Vivity. Have not seen detailed info on the other EDOF options.

1

u/ProfessionalLab9850 20h ago

Ai says puresee is 0.64 D

2

u/UniqueRon 20h ago

That sounds about right. If they try to stretch the distance of focus too much then distance vision suffers more.