Cataract, Lenses, Intraocular, Myopia, Presbyopia, Satisfaction
Conditions
Keywords
Cataract, Presbyopia, Intraocular Lens, Axial Length, Satisfaction
Brief summary
This prospective cohort study enrolled patients with implantation of a trifocal IOL. Only one eye of each patient was enrolled. Eyes were devided into three groups according the axial length (AL), including the short AL group, the control group and the long AL group. Manifest refraction, uncorrected and distance-corrected visual acuity at different distances, contrast sensitivity, aberrations and IOL decentration were measured three months after surgery. Spectacle independence, adverse photic phenomena, overall satisfaction and life quality were assessed with a questionnaire.
Interventions
OTHERAT LISA tri 839MP (Carl Zeiss Meditec AG)
This prospective cohort study collected data of patients who underwent bilateral or unilateral cataract surgery with the AT LISA tri 839MP implantation.
Sponsors
Peking University Third Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
40 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Inclusion criteria were patients older than 40 years with significant bilateral or unilateral cataract seeking spectacle independence, with the AL between 21.00 to 30.00 mm, the prediction of postoperative corneal astigmatism less than 1.0 diopters (D), the angle kappa less than 0.50 mm, the corneal spherical aberration less than 0.5 μm and the corneal higher order aberration less than 0.5 μm.
Exclusion criteria
*
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Refractive Outcomes | Three months after surgery. | Manifest refraction was measured. |
| Visual Acuity at Different Distances | Three months after surgery. | Uncorrected and corrected distance (5 m) visual acuity (UDVA, CDVA), uncorrected and distance-corrected intermediate (80 cm) and near (40 cm) visual acuity (UIVA, DCIVA, UNVA and DCNVA) were measured. |
| Defocus Curve | Three months after surgery. | The defocus curve was measured with the additional spherical diopters from +2.00 D to -4.00 D in 0.50 D steps. |
| Contrast Sensitivity and Aberrations | Three months after surgery. | Using the OPTEC 6500 Vision Tester (Stereo Optical Co. Inc, Chicago, USA), the contrast sensitivity was conducted under four conditions, including photopic(85 cd/m2), mesopic(3 cd/m2), photopic with glare and mesopic with glare. Besides, there are five spatial frequencies (1.5, 3, 6, 12, and 18 cycles per degree \[cpd\]) under every condition. |
| IOL decentration | Three months after surgery. | OPD Scan-III (NIDEK, Inc.) can automatically recognize and locate the edge of the pupil and measure its position relative to the optic axis. After pupil dilation, the IOL decentration was measured through adjusting the edge of the pupil to the edge of the lens manually. |
| Subjective Satisfaction | Three months after surgery. | The subjective satisfaction was assessed by a self-made questionnaire, which evaluated the spectacle independence at different distances, the incidence of several adverse photic phenomena including glare, halo and starburst, and the overall satisfaction. |
| Life Quality | Three months after surgery. | The life quality after surgery was assessed by the National Eye Institute Visual Function Questionnaire-25 (NEI VFQ-25) in Chinese. |
Countries
China
Outcome results
None listed