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This abstract is assigned to session BSCRS: Belgian Societies of Cataract and Refractive Surgery

Title

Physiol FineVision, a new trifocal diffractive intraocular lens: early results

Purpose	To evaluate the clinical results in cataract surgery when implanting a new diffractive intraocular lens (IOL) producing three useful focal points
Methods	A new trifocal diffractive pattern was designed by combining two superimposed diffractive profiles. Incident light could be focused toward three useful foci: distant, mid-range (intermediate), and near. The 1st order diffractive power of the 2nd diffractive profile (1.75D) was half as that of the 1st diffractive profile (3.50 D), providing the intermediate foci. The fraction of light lost in non-useful orders was reduced compared to bifocal designs. 20 eyes of 10 patients were included in the study. Functional results, defocus curves as well as contrast sensitivity were evaluated. Mean follow-up was 3 months.
Results	The mean monocular uncorrected visual acuity was 20/25 while the binocular UCVA was 20/20 . The monocular and binocular uncorrected acuity for near vision at 40 cm was 20/25 , At 30 cm the monocular (20/40) and the binocular (20/32) was worse than at 40 cm. In contrast the uncorrected intermediate visual acuity (60 cm) was 20/25 monocular and 20/20 binocular. The defocus curve showed clearly two peaks at 0 and about -2.5 D with at the intermediate focus a dramatic improvement compared to the defocus curve of other bifocal IOLs. Contrast sensitivity was within the normal range. Halo and glare effects were rarely reported.
Conclusion	Implanting a trifocal diffractive IOL results in very good functional results as well as high patient satisfaction. The design of the FineVision adds intermediate vision with no significant decrease in near and far vision as compared by currently available bifocal IOL’s.

Author 1

Last name	VRYGHEM
Initials	JC
Department	Brussels Eye Doctors / Clinique St-Jean
City	Brussels

Author 2

Last name	HEIREMAN
Initials	S