To evaluate visual outcomes of a segmental refractive multifocal intraocular lens (IOL) after cataract surgery.
Purpose: This prospective, nonrandomized noncomparative case series investigates the visual performance after bilateral implantation of a segmental refractive multifocal intraocular lenses (IOL) after cataract surgery and was performed at the department of Ophthalmology, Goethe University, Frankfurt, Germany. Methods: Fifty eyes (25 patients) were included. Inclusion criteria were bilateral cataract, age \> 45 years, corneal astigmatism ≤ 0.75 D postoperatively, pupil size 3 to 6 mm (mesopic), and center shift \< 1 mm (Pentacam). Exclusion criteria were previous ocular surgeries, amblyopia or potential postoperative distance-corrected visual acuity (DCVA) \< 0.3 logMAR, Intervention or Observation: Uncorrected (UCVA) and DCVA in 4 m, 80 cm, 40 cm; contrast sensitivity (CS) under photopic and mesopic conditions; reading skills (Radner Reading Charts); defocus curve, questionnaire on optical quality (OQ) and spectacle independence were assessed after 3 months. Main Outcome Measures: At 3 months postoperatively, UCVA and DCVA in 4 m, 80 cm, 40 cm (logMAR); defocus curves; CS; reading skills; and OQ questionnaire results.
Study Type
OBSERVATIONAL
Enrollment
25
Procedure/Surgery: Bilateral implantation of a segmental refractive multifocal intraocular lens (MIOL) following cataract surgery.
Department of ophthalmology University clinic Frankfurt
Frankfurt am Main, Hesse, Germany
Best corrected visual acuity at far distance
Monocular and binocular corrected visual acuity at far distance measured in logMAR 3 month after lens surgery
Time frame: Measured 3 month after lens surgery
Best corrected visual acuity at intermediate distance
Monocular and binocular corrected visual acuity at intermediate distance measured in logMAR 3 month after lens surgery
Time frame: Measured 3 month after lens surgery
Best corrected visual acuity at near distance
Monocular and binocular best corrected visual acuity at near distance measured in logMAR 3 month after lens surgery
Time frame: Measured 3 month after lens surgery
Uncorrected visual acuity at far distance
Monocular and binocular uncorrected visual acuity at far distance measured in logMAR 3 month after lens surgery
Time frame: Measured 3 month after lens surgery
Uncorrected visual acuity at intermediate distance
Monocular and binocular uncorrected visual acuity at intermediate distance measured in logMAR 3 month after lens surgery
Time frame: Measured 3 month after lens surgery
Uncorrected visual acuity at near distance
Monocular and binocular uncorrected visual acuity at near distance measured in logMAR 3 month after lens surgery
Time frame: Measured 3 month after lens surgery
Binocular contrast sensitivity (CS) under photopic, mesopic, and mesopic with glare lighting conditions
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Binocular contrast sensitivity (CS) was measured with the Functional Acuity Contrast Test (FACT) chart in the Optec 6500 Vision Tester (Stereo Optical Co., Chicago, IL) under binocular photopic (85 cd/m²), mesopic (3 cd/m²), and photopic and mesopic with glare conditions at a spatial frequency of 6 cycles per degree (cpd) (threshold range 0.78-2.26).
Time frame: Measured 3 month after lens surgery
Defocus curve testing
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).
Time frame: Measured 3 month after lens surgery
Radner reading skills
Binocular distance-corrected reading acuity (40 cm) was investigated in LogRAD (Reading Acuity Determination) using reading charts (Radner Reading Charts).
Time frame: Measured 3 month after lens surgery
Optical quality questionnaire
Quality of vision questionnaire (visual analogue scale (VAS) 0 (perfect / no symptoms) to 100 (extremely poor / maximum symptom intensity)) asking for evaluation of "glare", "halos", "starbursts", "blurred vision", and "ghosting" under photopic, mesopic and scotopic light conditions, if they wear any spectacles, and to evaluate their total quality of vision.
Time frame: Measured 3 month after lens surgery