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Factors which Influence Accommodative Amplitude in Crystalens HD Patients

Factors which Influence Accommodative Amplitude in Crystalens HD Patients. Uday Devgan, MD, FACS Devgan Eye Surgery, Los Angeles, CA.

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Factors which Influence Accommodative Amplitude in Crystalens HD Patients

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  1. Factors which Influence Accommodative Amplitude in Crystalens HD Patients Uday Devgan, MD, FACS Devgan Eye Surgery, Los Angeles, CA FINANCIAL DISCLOSURES: Abbott Medical Optics: consultant, research, stockholder; Accutome Inc: speaker; Alcon Laboratories: stockholder ; Allergan: consultant, speaker, research funding, stockholder; Bausch & Lomb: consultant, research funding;Calhoun Vision: research funding; Gerson Lehman Group: consultant; Inspire Pharma: stockholder; Ista Pharma: consultant, speaker, stockholder; iTherapeutix: research funding, travel support; Optos Inc: speaker, consultant; Pfizer Inc: speaker, stockholder; Sirion Therapeutics: consultant; Specialty Surgical: stockholder; Staar Surgical: consultant (former), speaker, stockholder; Zeiss: speaker

  2. Who are the best Crystalens HD patients and why?

  3. Study Design • Retrospective analysis of 80 patients • Single surgeon (UD) • Examination of the distance vision eye only • To avoid benefit of mono-vision / mini-mono • Near vision measured through best-corrected distance vision

  4. Evaluation • Patient Age: <65 65+ • Prior LASIK: yes no • Axial length: <26mm>26mm • Capsulorrhexis: <5.5mm >5.5mm • IOL Orientation: vertical horizontal

  5. AGE: Younger or Older Age > 65 years Age < 65 years Not statistically significant (P > 0.10) N=36 BDCNVA=J3.5 N=44 BDCNVA=J4.1

  6. Prior LASIK, PRK, RK Virgin eye Prior Refractive Sx Not statistically significant (P < 0.10) N=28 BDCNVA=J2.9 N=52 BDCNVA=J3.7

  7. Axial Length High Myope (>26mm) Or previous myope s/p LASIK Normal (<26mm) Not statistically significant (P < 0.10) N=68 BDCNVA=J3.7 N=12 BDCNVA=J2.8

  8. Capsulorrhexis Size > 5.5 mm < 5.5 mm No data N=1 Ant Cap YAG done N=79

  9. IOL Orientation Vertical Horizontal Not statistically significant (P > 0.10) N=47 BDCNVA=J3.6 N=33 BDCNVA=J3.7

  10. Problems with my Study • Patients fell into multiple categories: • Prior LASIK more common in younger patients • Long Axial Length more common in younger patients and prior LASIK patients • Not enough patients • Post-op timing of results should have been consistent • Need longer follow-up in post-op period • Near vision not always measured at 16 inches

  11. Conclusions: • No statistically significant answers • Suggestions (Not Proven): • Prior LASIK patients may do better perhaps due to other ocular aberrations • Patients with an Axial length > 26 mm may do better due perhaps due to thin IOL, optics. • Needs further analysis

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