Comparative Binocular Defocus Curves after Contralateral AcrySof ...

Comparative Binocular Defocus Curves after Contralateral AcrySof ... PowerPoint PPT Presentation


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1. Comparative Binocular Defocus Curves after Contralateral AcrySof ReSTOR +3/+4 Aspheric and Bilateral ReSTOR +3 Aspheric Implantation Charith Fonseka, M.D.

2. IOL Designs

3. ReSTOR Aspheric +3 (SN6AD1) Utilizes existing ReSTOR® Aspheric +4 D platform with identical asphericity, energy distribution profile, and shape factor Modified add power from +4 D to +3 D 9 diffractive rings vs. 12 diffractive rings Slightly wider ring spacing to modify the add power Provides: 1 – 1.5 lines improvement in intermediate VA No significant differences in visual disturbances

4. Prospective Study Design Group 1: 21 patients with bilateral IQ ReSTOR +3 D Aspheric IOLs Group 2: 20 subjects for contralateral IQ ReSTOR group randomized to receive the IQ ReSTOR +3 D Aspheric IOL in one eye and the IQ ReSTOR +4 D Aspheric IOL in the other eye Inclusion criteria for both groups = 70 years old =1 D astigmatism No pre-existing conditions that might affect results Comparative Data Refractive data Demographics Defocus curves were collected at 6 months postoperatively for bilateral group will be collected at 6 months postoperatively for contralateral group

5. Preoperative Patient Demographics Contralateral group Average age: 59 ± 7 years 71% male, 29% female Average spherical equivalent: 0.8 ± 1.5 D Average distance BSCVA: 0.2 ± 0.2 logMAR Bilateral group Average age: 62 ± 7 years 38% male, 62% female Average spherical equivalent: 1.2 ± 1.9 Average distance BSCVA: 0.4 ± 0.4 logMAR

6. Mean UCVAs at 3 Months

7. Mean Best Distance-Corrected VAs at 3 Months Postoperative

8. BSCVA Binocular Defocus Curves at 3 Months Postoperative No statistical differences at any vergence To make valid comparisons, need larger numbers of patients

9. Conclusions Preliminary results with small numbers of patients suggest that implantation of an IQ ReSTOR +3 D IOL contralateral to an IQ ReSTOR +4 D IOL Provides good visual acuity at near, intermediate, and far distances Provides visual acuity SIMILAR to that of patients with bilateral IQ ReSTOR +3 D IOLs

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