Knorz Michael C
Klin Monbl Augenheilkd. 2020 Feb;237(2):213-223. doi: 10.1055/a-1023-9859. Epub 2019 Nov 19.
Surgical correction of presbyopia can be performed by refractive lens exchange, replacing the lens with a monofocal, a multifocal or an extended-depth-of-focus (EDOF) intraocular lens (IOL). Option 1, a monofocal IOL, must be combined with monovision, otherwise presbyopia cannot be corrected. Monovision in this context means one eye for distance and one eye targeted for - 1.5 D. With this concept glasses are still required for near (30 - 40 cm) and for driving, but intermediate distances and everyday life is usually possible without glasses. Option 2, a multifocal IOL, results in spectacle independence. Current multifocal IOL typically use three foci and are therefore called trifocal IOL. Distance vision and near vision are typically good, intermediate vision still acceptable but lower than distance and near, resulting in occasional problems while working on a computer. Option 3, EDOF-IOL, provide good distance and intermediate vision without glasses but near vision typically requires reading glasses.
老花眼的手术矫正可通过屈光性晶状体置换术进行,用单焦点、多焦点或扩展景深(EDOF)人工晶状体(IOL)替换晶状体。选项1,单焦点人工晶状体,必须与单眼视配合使用,否则无法矫正老花眼。在此背景下,单眼视是指一只眼睛用于看远,另一只眼睛的目标屈光度为-1.5D。采用这种方法,看近(30-40厘米)和开车时仍需要佩戴眼镜,但在中等距离和日常生活中通常无需佩戴眼镜。选项2,多焦点人工晶状体,可实现无需眼镜。目前的多焦点人工晶状体通常使用三个焦点,因此称为三焦点人工晶状体。远视力和近视力通常较好,中视力仍可接受但低于远视力和近视力,在使用电脑工作时偶尔会出现问题。选项3,扩展景深人工晶状体,可提供良好的远视力和中视力,无需佩戴眼镜,但近视力通常需要佩戴老花镜。