Case #9: Man in his 50s from Suginami (extended depth of focus multifocal lens: TECNIS Symfony)

He is relatively young among people having cataract surgery, but in both eyes the nuclear cataracts from high myopia were very advanced, beyond grade 4 in hardness.
He had advanced medical care insurance and wished for multifocal lenses from the start, but he drives at night and plays sports, and he had mild glaucomatous optic atrophy, so we recommended the extended depth of focus (covered by advanced medical care) multifocal lens TECNIS Symfony, which has few halos and glare and little attenuation of light, a loss of only about 8% versus 18% for conventional bifocals, that is, good contrast.
Its add is +1.5 D, so in theory it sees continuously from 1/1.5 m, about 65 cm, outward; so although it is multifocal, light reading glasses are needed to see at the usual reading distance of 30 cm. After discussion with him, we proposed a power that slightly sacrifices distance (target refraction −0.50 to −0.75 D) so that he can see the computer he uses often at work without glasses.
His eyes were long, so considering the risk of refractive error, we decided the power using several intraocular lens formulas, and as a result achieved better than the target: 1.5 distance / 1.0 near uncorrected in both eyes.
Compared with conventional diffractive bifocal multifocal lenses, vision came out clearly right after surgery, and I felt another advantage was that "getting used to it," an uncertain factor, was almost unnecessary. It also has a mild astigmatism-correcting effect, so I expect the number of candidates to increase further.