View abstract

This abstract is assigned to session OB Free papers 1: Anterior segment

Title

Evaluate clinical outcomes of a trifocal diffractive pattern IOL.

Purpose	Evaluate the clinical outcomes with a trifocal diffractive pattern IOL
Methods	28 eyes from 21 patients (age 70 +/-8) were implanted with the Physiol MicroF new trifocal diffractive IOL between March and August 2010. This IOL distributes the energy usually lost in bifocal diffractive patterns to an intermediate focus. The far distance vision (both corrected and uncorrected), intermediate distance vision at 65 cm and near visual acuity (30 cm) in photopic and mesopic conditions are assessed together with the defocus curve and patient satisfaction.
Results	The mean follow-up is between 3.4+/-2.5 months. The mean spherical equivalent is 0.00±0.02. The mean uncorrected and best corrected visual acuity are 0.89±0.11 and 0.95±0.06 respectively. The mean corrected intermediate and near visual acuities are Parinaud 3.5±1.3 and Parinaud 2.3±0.7 respectively. There is no significant variance between the far visual acuity in photopic and mesopic conditions, whereas the intermediate and near visual acuities are lower in mesopic conditions. The defocus curve shows no peaks but a continuous visual acuity with respect to the negative defocus addition . Patient satisfaction with regard to spectacle independence is high with no complaint of halos or glare.
Conclusion	The introduction of an intermediate focus point with conservation of the amount of energy allocated to far and near vision does not cause any ghost images. The diffractive pattern gives good visual performances. This pupil dependent design increases the amount of energy for far vision at night, clinically reducing the patient’s perception of halos and glare.

Author 1

Last name	HENRY
Initials	JM
City	Charleroi