Aspheric Apodized Diffractive Multifocal IOL With +2.5 D Add Power: 6-Month Results
Narrative Responses:
Purpose
To present the clinical results of a multifocal IOL with +2.5 D add power (ReSTOR 2.5, Alcon Laboratories). The IOL was implanted in patients either bilaterally or in one eye (the other one was implanted with a +3.0 add power multifocal IOL (ReSTOR 3.0), according to patient’s needs and expectations.
Methods
The ReSTOR 2.5 was implanted bilaterally in 20 patients, and contralaterally in the dominant eye of 40 patients who received a ReSTOR 3.0 in the other (non-dominant) eye. Eyes with corneal astigmatism greater than 0.50 D were implanted with the toric version of the two IOLs. Refraction, uncorrected (UCVA) and best corrected visual acuity (BCVA) were tested at 4 meters (distance), 60 cm (intermediate), and 40 cm (near). Postoperative assessments were performed over a six-month follow-up. Evaluation questionnaires (scale 0 to 5) were used to determine spectacle dependence, light dependence for reading, and patient satisfaction.
Results
All 80 eyes with the ReSTOR 2.5 had 20/20 or better BCVA. All patients implanted bilaterally had binocular distance UCVA 20/20 or better, 20/20 or better intermediate UCVA. At near, 6 patients (30%) could read 20/20, they all could read 20/50. Spectacle dependence scored 1.8, light dependence scored 2.4, satisfaction scored 4.2. All patients implanted contralaterally had binocular distance UCVA 20/20 or better. Intermediate UCVA was 20/20 or better for 37 patients (92.5%). At near, 30 patients (75%) could read 20/20, they all could read 20/32. Spectacle dependence scored 0.8, light dependence scored 1.7, satisfaction scored 4.7.
Conclusion
When implanted bilaterally, the ReSTOR 2.5 provides very good distance and intermediate uncorrected vision, while delivering some functional near uncorrected vision. The contralateral approach with a ReSTOR 3.0 implanted in the non-dominant eye seems to improve uncorrected near vision, overall spectacle independence, and patient satisfaction.