Visual Performance Following Implantation of Presbyopia Correcting IOLs
- Conditions
- Loss of Visual Contrast SensitivityVisual ImpairmentNear Vision
- Interventions
- Procedure: phacoemulsification with implantation of presbyopia correcting IOL
- Registration Number
- NCT04907955
- Lead Sponsor
- Dar Al Shifa Hospital
- Brief Summary
The purpose of the current study was to compare the visual performance after bilateral implantation of the Panoptix IOL , or the AT LISA IOL or Tecnis Symfony IOL . The focus was on intermediate vision, defocus curves, and contrast sensitivity.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 50
- patients with normal ocular examination apart from cataract.
- previous ocular surgery.
- ocular pathology or corneal abnormalities.
- an endothelial cell count below 2000 cells/mm2.
- corneal astigmatism greater than 1.0 diopter (D) measured with Scheimpflug tomography (Sirius, CSO, Italy).
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description panoptix PANFOCAL intraocular lens phacoemulsification with implantation of presbyopia correcting IOL panoptix PANFOCAL intraocular lensis a single-piece aspheric non-apodized diffractive panfocal IOL that distributes light energy to three focal points in both small and large pupil conditions Trifocal Diffractive the AT LISA intraocular lens phacoemulsification with implantation of presbyopia correcting IOL Trifocal Diffractive the AT LISA is a preloaded single-piece aspheric diffractive trifocal IOL and made of hydrophilic acrylic with a hydrophobic surface with an ultraviolet absorber. This aspheric IOL is aberration -correcting in order to reduce and compensate for corneal spherical aberrations. Symphony EDOF (extended depth of focus) intraocular lens phacoemulsification with implantation of presbyopia correcting IOL SYMPHONY EDOF intraocular lens is a single-piece aspheric biconvex hydrophobic acrylic IOL with a 6.0 mm optic and an 13.0 mm overall diameter. This IOL consists of a wavefront-designed anterior aspheric surface (negative spherical aberration of -0.27 mm to counterbalance the net positive spherical aberration from cornea) and a posterior achromatic diffractive surface with echelette design.
- Primary Outcome Measures
Name Time Method visual acuity 6 months postoperatively. The monocular uncorrected (UDVA) and corrected (CDVA) distance visual acuity (4 m), uncorrected intermediate visual acuity (UIVA) (60 cm and 80 cm), distance-corrected intermediate visual acuity (DCIVA), uncorrected near visual acuity (40 cm), and distance-corrected near visual acuity (DCNVA) were assessed. Standardized logarithm of the minimum angle of resolution (logMAR) charts were used for visual acuity measurement at 4 m, 80 cm, and 40 cm.
- Secondary Outcome Measures
Name Time Method spectacle independence 6 months postoperatively. patients were given a questionnaire to assess their spectacle independence. The response for spectacle independence was yes or no.
defocus curve 6 months postoperatively. The binocular defocus curve was done to evaluate the functional range of vision. The curve was obtained while the patient wearing his distance correction to provide the best distance visual acuity in both eyes. The test was performed under photopic conditions (85 candelas/m2) using ETDRS charts at a distance of 4m with the introduction of defocusing lenses from +1.00 D to -4.00 D in 0.50 D steps.
contract senstivity 6 months postoperatively. The CSV-1000 system (Vector Vision Inc. Greenville, OH, USA) was used to measure contrast sensitivity under photopic and mesopic conditions without glare with spatial frequencies ranging between 3 and 18 cycles/degree.
photic phenomena 6 months postoperatively. The presence of dysphotopsia including haloes, glare and starburst were assessed regarding their frequency, severity and the degree of bother.
Trial Locations
- Locations (1)
Daralshifa hospital
🇰🇼Kuwait, Kuwait