H52.4
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - Presbyopia - Myopia or hyperopia up to 5D (spherical equivalent) - Astigmatism up to 3D - pupil (measured with Procyon): high mesopic: 2,5 - 3mm, low mesopic: = 4,5mm - Offset (pupil vs. vertex measured with Keratron Scout): 0 - Ocular spherical aberration (C4,0 @ 6mm) measured with iTrace: > -0,2 - Ocular HOA RMS (@ 6mm) measured with iTrace: <0,67
Exclusion criteria
Exclusion criteria: Occupational groups, dependent on good visual acuity, who might be hindered in career du to possible visual complications (e.g. motorists, pilots).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Comparison of preoperative and one year postoperative uncorrected and distance corrected near visual acuity (logRAD). Near visual acuity is tested using Salzburg Reading Desk (SRD). | — |
Secondary
| Measure | Time frame |
|---|---|
| Following tests are conducted 1 month, 3 month, 6 month and 1 year postoperatively: - reading ability (logRAD) is tested using Salzburg Reading Desk (SRD). - refractive error - visual acuity at distance, intermediate and near - contrast sensitivity (FF-Cats) - glare sensitivity (FF-CATS) - ocular and corneal aberrations (i-Trace) - corneal topography (Pentacam) - subjective optical quality (questionaire) | — |
Countries
Germany
Contacts
Klinikum der Johann Wolfgang Goethe Universität