Visual Performance Following Implantation of 3 Presbyopia Correcting Intraocuar Lenses
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 50
- 试验地点
- 1
- 主要终点
- visual acuity
研究概览
简要总结
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •patients with normal ocular examination apart from cataract.
排除标准
- •previous ocular surgery.
- •ocular pathology or corneal abnormalities.
- •an endothelial cell count below 2000 cells/mm
- •corneal astigmatism greater than 1.0 diopter (D) measured with Scheimpflug tomography (Sirius, CSO, Italy).
研究组 & 干预措施
panoptix PANFOCAL intraocular lens
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
干预措施: phacoemulsification with implantation of presbyopia correcting IOL (Procedure)
Trifocal Diffractive the AT LISA intraocular lens
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.
干预措施: phacoemulsification with implantation of presbyopia correcting IOL (Procedure)
Symphony EDOF (extended depth of focus) intraocular lens
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.
干预措施: phacoemulsification with implantation of presbyopia correcting IOL (Procedure)
结局指标
主要结局
visual acuity
时间窗: 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.
次要结局
- contract senstivity(6 months postoperatively.)
- photic phenomena(6 months postoperatively.)
- spectacle independence(6 months postoperatively.)
- defocus curve(6 months postoperatively.)
研究者
magda torky
Principle investigator
Dar Al Shifa Hospital