Pseudophakic Eyes With Presbyopia-correcting IOLs: OCT Biometry and Pyramid Aberrometry
Pseudophakic Eyes Implanted With Different Presbyopia-correcting IOL Designs: 3-D Anterior Segment OCT Biometry and Pyramid Wavefront Sensing- Based Retinal Image Quality
Prim. Prof. Dr. Oliver Findl, MBA
80 participants
Apr 4, 2024
OBSERVATIONAL
Conditions
Summary
To correlate ocular morphology from anterior segment OCT and pyramid wavefront sensing in order to comprehensively analyze pseudophakic in vivo image quality of presbyopia-correcting IOLs in cataract patients.
Eligibility
Inclusion Criteria6
- Men and women aged above 21 years with prior uncomplicated cataract/IOL exchange surgery
- Willing to sign informed consent before measurements
- Corrected distance visual acuity (CDVA) of 0.1 logMAR or better
- Absence of corneal scars/dry eye disease that could falsify the light transmission of the study eye
- Total absence of posterior capsule opacification or patients who already have undergone Nd:YAG capsulotomy
- Absence of ocular comorbidity (Macular degeneration, glaucoma, amblyopia)
Exclusion Criteria5
- Prior corneal refractive or ocular surgery
- Posterior capsule opacification.
- Keratometry between \<42.5 and \>45 D,
- Corneal spherical aberration \> 0.4 microns 5) Angle kappa \> 0.4 mm
- \) Zonular weakness 7) Pseudoexfoliation syndrome 8) Eccentric fixation or insufficient ability to fixate (tremor, nystagmus) 9) Pregnancy
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Interventions
The Osiris-T aberrometer is a CE-certified device that operates via a high-resolution four-faced pyramid wavefront sensor (PWS) to analyze light intensity among four images (sub-apertures) of the patients ́entrance pupil akin to a Foucault knife-edge test. Thereby measurements of the wavefront and refractive error can be quantified non-invasively. The sampling density of the wavefront error is 45,000 points at maximum pupil. The device uses a near-infrared extended light-emitting diode source emitting at 850 nm. Its is additionally intertwined with a corneal topography system to also characterize the corneal aberrations and compute via direct subtraction the internal ocular optics.
Locations(2)
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NCT07436247