Comparison of SRK-T With Kane Formula for Prediction of Refractive Outcome After Phacoemulsification
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 70
- 试验地点
- 1
- 主要终点
- Post-operative refractive outcome in diopters
研究概览
简要总结
Cataract is a leading cause of blindness in the world. Cataract surgery is one of the most commonly performed ocular procedures. We aim to compare the newer generation biometry formula; the Kane formula with the commonly used SRK-T formula for intraocular power calculation in uneventful phacoemulsification surgery to assess the post-operative refractive outcomes at one month post-surgery.
详细描述
Purpose: To compare post-operative refractive outcome with Sanders Retzlaff Kraff theoretical (SRK T) and Kane formulae for intraocular lens (IOL) power calculation in cataract patients Study Design: Prospective, interventional study Place and Duration of Study: Department of Ophthalmology, Fauji Foundation Hospital, Rawalpindi Material and Methods: A total of a 70 eyes, 35 in each group will be included in our study. The patients will be randomly divided into two groups. In cases of bilateral cataract, one eye will be included in each group for better control. IOL power calculation in Group A will be done with the SRK-T formula and in group 2 with the Kane Formula. Autokeratometry and A-scan ultrasound will be done for biometry. Inclusion criteria will be uncomplicated cataract in both genders. Exclusion criteria will be ocular trauma, uveitis, previous intraocular surgery, or any retinopathy. All patients will undergo phacoemulsification with foldable lens implantation by two experienced surgeons. Post-operative refractive outcome will be evaluated at one month after surgery. The two groups will be compared.
Results: The results will be calculated by SPSS. Conclusion: A conclusion will be drawn on the basis of our results.
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
- None
入排标准
- 年龄范围
- 40 Years 至 100 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Senile cataract (nuclear, cortical, posterior subcapsular, mature, hypermature cataract)
- •Absence of other ocular pathology causing diminished visual acuity
- •patients above 40 years of age
- •Astigmatism > 2.5 diopters
排除标准
- •Retinal diseases
- •Maculopathy
- •Complications during phacoemulsification
- •Combined procedures
- •Previous ocular surgery
- •Secondary cataract
结局指标
主要结局
Post-operative refractive outcome in diopters
时间窗: 1 hour to 1 year
Post-operative refractive outcome will be compared with intended refractive outcome
Visual acuity (Snellen/logMAR) and refractive error (automated refraction in diopters)
时间窗: 1 month post-operatively
The visual acuity and refractive error of the patients will be measured 1 month post-operatively to compare between the two groups
Spherical equivalent in diopters
时间窗: 1 hour to 1 year
The spherical equivalent of the patients will be measured 1 month post-operatively to compare between the two groups
次要结局
未报告次要终点