Visual Acuity
Conditions
Keywords
visual outcomes, multifocal intraocular lens, patient satisfaction, spectacle independence
Brief summary
To evaluate the visual performance after bilateral implantation of multifocal intraocular lenses.
Detailed description
This study evaluates the visual performance after bilateral implantation of multifocal intraocular lenses (IOL). This prospective study is performed at the department of Ophthalmology, Goethe University, Frankfurt, Germany. Patients who received bilateral implantation of a multifocal intraocular lens pre-enrollment were included consecutively. Exclusion criteria were previous ocular surgeries excluding cataract surgery and refractive lens exchange, regular corneal astigmatism of \>1.5 diopter, and ocular pathologies or corneal abnormalities. At 3 months postoperative examination included manifest refraction; monocular and binocular uncorrected (UCVA) and distance-corrected (DCVA) visual acuity in at far, intermediate at near distance (logMAR); slit-lamp examination. 3 months postoperatively defocus testing, binocular contrast sensitivity (CS) under photopic and mesopic conditions, and a questionnaire on subjective quality of vision, optical phenomena, and spectacle independence were performed.
Interventions
PROCEDUREFemtosecond-laser-assisted lens exchange
Bilateral implantation of multifocal intraocular lens (MIOL) following femtosecond-laser-assisted lens exchange
Sponsors
University Clinic Frankfurt
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
Yes
Inclusion criteria
* bilateral cataract surgery or refractive lens exchange with the implantation a multifocal intraocular lens * a regular corneal astigmatism \< 1.5 D measured with Pentacam (Oculus, Wetzlar, Germany)
Exclusion criteria
* other previous ocular surgeries * ocular pathologies * corneal abnormalities * endothelial cell count below 2000/mm²
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Best corrected visual acuity at intermediate distance | Measured 3 month after lens surgery | Monocular and binocular corrected visual acuity at intermediate distance measured in logMAR 3 month after lens surgery |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Best corrected visual acuity at near distance | Measured 3 month after lens surgery | Monocular and binocular best corrected visual acuity at near distance measured in logMAR 3 month after lens surgery |
| Uncorrected visual acuity at far distance | Measured 3 month after lens surgery | Monocular and binocular uncorrected visual acuity at far distance measured in logMAR 3 month after lens surgery |
| Uncorrected visual acuity at intermediate distance | Measured 3 month after lens surgery | Monocular and binocular uncorrected visual acuity at intermediate distance measured in logMAR 3 month after lens surgery |
| Best corrected visual acuity at far distance | Measured 3 month after lens surgery | Monocular and binocular best corrected visual acuity at far distance measured in logMAR 3 month after lens surgery |
| Binocular contrast sensitivity (CS) under photopic, mesopic, and mesopic with glare lighting conditions | Measured 3 month after lens surgery | Binocular contrast sensitivity (CS) was measured under photopic, mesopic (0.167 cd/m²), and mesopic with glare lighting conditions by means of the Frankfurt-Freiburg Contrast and Acuity Test System (FF-CATS) |
| Defocus curve testing | Measured 3 month after lens surgery | Defocus curve (monocular and binocular) was tested from -5.0 D to +2.0 D in 0.5 D steps under photopic lighting conditions (ETDRS). |
| Uncorrected visual acuity at near distance | Measured 3 month after lens surgery | Monocular and binocular uncorrected visual acuity at near distance measured in logMAR 3 month after lens surgery |
Countries
Germany
Outcome results
None listed