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Multifocal lenses analysis with OQAS system

Multifocal lenses analysis with OQAS system. Dr Alfredo Castillo Hospital Quirón Madrid. ASCRS 2008. Chicago. Visual quality study in multifocal IOLs. Multifocal IOLs potential range from near to far The out-of focus image reduce CSF (1)

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Multifocal lenses analysis with OQAS system

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  1. Multifocal lenses analysis with OQAS system Dr Alfredo Castillo Hospital Quirón Madrid ASCRS 2008. Chicago

  2. Visual quality study in multifocal IOLs • Multifocal IOLs potential range from near to far • The out-of focus image reduce CSF (1) • Refractive IOLs more visual disturbances than diffractive IOls • Diffractive IOLs designed in aspheric models • Analyze the optical quality of Tecnis ZM900 (AMO) vs Acri.LISA 366D (Acri.Tec) using OQAS system Montés-Micó R. Visual performance with multifocal IOL and mesopic contrast sensitivity under distance and near conditions. Ophthalmol 2004;111:85-96

  3. Quality of vision measurement • Based in double-pass technique • Direct registration of diode laser light reflected back off the retina • Scatter and higher order aberrations (HOA) are measured • Quantitative and qualitative values • Accomodation analysis

  4. OQAS. Double-pass set up

  5. Visual quality study in multifocal IOLs. Material and methods • 20 eyes 20 patients in each group

  6. Inclusion criteria • Patients with cataract and lens sclerosis • Age range 50 - 70 years • IOL power: 18 - 25 D • Pupil diameter > 3.5 mm in mesopic conditions (Colvard) • IOL selection in each patient related to near visual needs, night driving, computers use…

  7. Exclusion criteria • Corneal Astigmatism > 1.5 D • Schrimer Test < 10 mm • BUT < 10 sc • Ocular disease • No ocular medication • Systemic diseases (diabetes) • Intraoperative complications • Detectable post-op capsular opacity • Postop BCVA < 0.8

  8. Postoperative Results • Distance BCVA (Snellen Test) • Tecnis : 0.96 (SD 0.35) • Acrilisa: 0.97 (SD 0.26) • No significant differences p= 0.35 • Near BCVA (Reading Test) • Tecnis: 0.97 (DE 0.25) • Acrilisa: 0.95 (DE 0.28) • No significant differences p = 0.36 • No significant differences in the post-op sphere (p = 0.21) and cylinder (p = 0.28) in both groups

  9. Acri.LISA results

  10. Tecnis ZM900 results

  11. Tecnis vs Acri.LISA T student and Levene Test

  12. Results OQAS PSF P=0.255 P=0.125

  13. Results OQAS MTF cut-off P=0.07

  14. Results OQAS MTF P= 0.07 P= 0.04 P= 0.09

  15. Results OQAS scatter P=0.43

  16. Tecnis

  17. Acri.LISA 366D

  18. Tecnis ZM900

  19. Acri.LISA 366 D

  20. Conclusions • OQAS allows objective visual quality mesurements in vivo • Tecnis ZM900 and AcriLISA 366 D achieve satisfactory results in the OQAS parameters • Acri.LISA obtains slight superior values than Tecnis in MTF,PSF and scatter • The unique statistical signifficant difference value was OQAS 20 (=.04)

  21. Resultado OQAS agrupado por AV

  22. Resultado OQAS agrupado por AV

  23. Resultado OQAS agrupado por AV

  24. Mejor Acrilisa 366 D

  25. Peor Tecnis ZM900

  26. Mejor Acrilisa 366 D

  27. Peor Tecnis ZM900

  28. Tecnis ZM900 • LIOs multifocales

  29. Acrilisa 366 D • LIOs multifocales

  30. Principio OQAS

  31. Estudio calidad óptica de LIOs multifocales. Técnica operatoria • Facoemulsificación coaxial • Infinity Vision System (Alcon) • Incisión eje más curvo o temporal • Tamaño 2,8 mm • CCC < 6 mm • Pulido capsular • Inyector Silver series (AMO) y Acri-Shooter A2-2000 • No diferencias significativas en la esfera (p = 0.21) y en el cilindro (p = 0.28) postoperatorio en ambos grupos

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