TY - JOUR 
A1 - Calvo Sanz, Jorge Antonio
AU - Sánchez Tena, Miguel Ángel
T1 - Characterization of optical performance with defocusing curve: Analysis of two refractive intraocular lens models with high and medium addition

Y1 - 2020
SN - 1888-4296

UR - http://hdl.handle.net/11268/7867
AB - Purpose
To characterize the optical performance of two models of refractive bifocal intraocular lenses, with medium and high addition, using defocus curves.
Methods
20 eyes from 20 subjects were included in this study. 10 eyes underwent caratact surgery with an implant of a medium addition refractive bifocal intraocular lens (IOL) (Lentis LS-313 MF20) and the other 10 eyes underwent cataract surgery with an implant of a high addition refractive bifocal IOL (Lentis LS-313 MF30). Six weeks after surgery, subjective refraction and defocus curve were made.
Results
Mean final residual refraction in spherical equivalent was +0.10 ± 0.07 D in the LS-313MF30 group and +0.12 ± 0.10 D in the LS-313MF20 group. Defocus curve showed a different optical performance in intermediate/near distance depending on the IOL model. The medium addition IOL provided good visual acuity (VA) at far and intermediate distance up to 50 cms, and the high addition IOL provided better VA in near distance up to 25 cms.
Conclusions
The high addition intraocular lens provides better visual acuity in the spatial range from infinity to the point close to 25 cm. The medium addition intraocular lens provides excellent visual acuity in far and intermediate vision.
The defocus curve seems to be a valid and reproducible tool for evaluating the optical behavior of multifocal sector refractive lenses.

KW - Oftalmología
KW - Lentes oftálmicas
KW - Oftalmología
KW - Instrumento óptico
LA - eng
ER -