Analysis Of Visual Function Of Non-Diffractive Iol With Extended Depth Of Focus And Diffractive Trifocal Iol With A Model Eye

To compare the visual function of non-diffractive depth-of-focus IOL and diffractive trifocal IOL using model eye.

ASUCA Eye Clinic SENDAI

To compare the visual function of a non-diffractive depth-of-focus extended IOL (Vivity, Alcon : CNAET) 20.0D and a diffractive trifocal IOL (PanOptix, Alcon : CNWTT) 20.0D in a model eye. The model eyes were set to a corneal spherical aberration of 0.20 μm and pupil sizes of 2, 3, and 4 mm were used (same of Asian average eye biometry). From the images obtained from both lenses, the decomposition limit was defined as visual acuity, and the contrast at LogMAR 0.2 was also measured.

CNAET showed a visual acuity defocus curve at all pupil diameters, while CNWTT showed a bimodal visual acuity curve at all pupil diameters with a slight decrease in visual acuity at -1D. CNAET showed better visual acuity around -1D, but CNWTT showed better visual acuity in the other distance. Contrast was 0.28, 0.31, and 0.19 for CNAET and 0.29, 0.17, and 0.18 (in order of 2 to 4 mm diameter) for CNWTT.

CNWTT had better near visual acuity than CNAET; CNAET had better contrast than CNWTT at 3mm pupil.