Cataract, Depth of Focus, Intraocular Lenses, Spherical Aberrations
Conditions
Brief summary
The purpose of this study is to evaluate differences in the depth of focus after implantation of a spherical or aspheric IOL in hypermetropic and emmetropic patients. After implantation of a spherical IOL hypermetropic patients may achieve a better depth of focus compared to emmetropic patients due to a larger amount of spherical aberrations.
Interventions
DEVICEAMO Tecnis ZA9003
DEVICEAMO Sensar AR40e
Sponsors
Medical University of Graz
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
40 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Cataract * Dioptric power of IOL \>22.0 D in hypermetropic patients and 18.0-22.0 D in emmetropic patients, respectively
Exclusion criteria
* Uveitis, pathology of the retina or the optic nerve * Corneal scarring or irregularities * Astigmatism \>1.5 D * Amblyopia * Perioperative complications * Postoperative refractive error \>2.0 D of spherical equivalent * Postoperative DCVA \<0.8 (ETDRS)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Distance-corrected intermediate visual acuity | 3 month postop |
Secondary
| Measure | Time frame |
|---|---|
| Uncorrected distance visual acuity | 3 month postop |
| Corrected distance visual acuity | 3 month postop |
| Uncorrected near visual acuity | 3 month postop |
| Corrected near visual acuity | 3 month postop |
| Distance-corrected near visual acuity | 3 month postop |
| Photopic contrast sensitivity | 3 month postop |
| Mesopic contrast sensitivity | 3 month postop |
| Spherical aberrations | 3 month postop |
| High order aberrations | 3 month postop |
| Pseudoaccomodation | 3 month postop |
Countries
Austria
Outcome results
None listed