NCT04952181Unknown不适用
Optical Biometry Versus Ultrasonic Biometry in Intraocular Lens Calculation in High Myopic Cataractous Patients: A Comparative Study
适应症
试验速览
- 阶段
- 不适用
- 入组人数
- 40
- 主要终点
- desired post operative refraction
研究概览
简要总结
the purpose of the study is to compare the accuracy of optical and ultrasonic biometry in intraocular lens (IOL) calculation in high myopic cataractous patients
详细描述
- Prospective interventional (QUASI experimental) comparative study
- This study will be conducted on high myopic cataractous patients scheduled for phacoemulsification and IOL implantation in department of ophthalmology, Sohag university
- patients will be divided into 2 groups one will be subjected to intraocular lens (IOL) calculation by optical biometry the second one will be subjected to intraocular lens (IOL) calculation by ultrasonic biometry
- postoperative auto refraction after I month
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 30 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •patients with simple cataract not associated with other pathologies suitable for phacoemulsification and 1ry IOL implantation With axial length (AXL) equal to or greater than 26.5mm
排除标准
- •History of trauma
- •Associated pathologies such as optic neuropathy, age related macular degeneration, macular edema, retinal detachment, , ocular inflammation, retinitis pigmentosa, proliferative diabetic retinopathy
- •corneal opacities or irregularities, scars, dystrophy or ectasia
- •Patients who underwent previous corneal surgery (including refractive surgery)
- •Patients having intraoperative complications as inability to achieve secure 'in the bag' placement of the IOL (i.e. due to posterior capsule rupture, vitreous loss, weak zonules, or zonular rupture)
结局指标
主要结局
desired post operative refraction
时间窗: postoperative refraction 1 month
detection of postoperative refraction by the use of autorefractor (one of the objective methods of assessment of refraction) after use of IOL power calculated by different investigations (optical vs ultrasonic)
次要结局
未报告次要终点
研究者
Esraa Ahmed Okasha
principle investigator
Sohag University
相似试验
Unknown
不适用
IOL Power Calculation Using Dual Schiempflug AnalyzerCataractNCT02362334Chuncheon Sacred Heart Hospital140
Unknown
不适用
Comparison of the Visual Quality of Traditional Ultrasound Biometrics and Lenstar on the Cataract After Pars Plana VitrectomyDiabetic Retinopathy Patients After VitrectomyNCT03485586Bojie Hu60
招募中
不适用
Measurement of the Optic Nerve Sheath DiameterOptic NerveNCT05548335Cleveland Clinic Akron General30
已完成
不适用
Comparison of Pupilometer and Ultrasound of Optic Nerve Sheath Diameter in Estimating Intracranial Pressure (ICP)Intracranial HemorrhagesBrain InjuriesIschemic StrokeStrokeSubarachnoid HemorrhageNCT03115450Loma Linda University51
已完成
不适用
Comparison of Two Different Optical Biometric SystemsPresbyopiaCataractOcular BiometryIntraocular LensNCT05411341Democritus University of Thrace133