Comparison of SRK-T With Kane Formula for Prediction of Refractive Outcome After Phacoemulsification
- Conditions
- Cataract; Surgery; Phacoemulsification; Biometry; Intraocular Lens Power
- Interventions
- Other: Biometry with Kane formulaOther: Biometry with SRK-T formula
- Registration Number
- NCT05564455
- Lead Sponsor
- Foundation University Islamabad
- Brief Summary
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.
- Detailed Description
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.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 70
- 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
- Retinal diseases
- Maculopathy
- Uveitis
- Complications during phacoemulsification
- Combined procedures
- Previous ocular surgery
- Trauma
- Secondary cataract
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Kane Formula for Prediction of refraction Biometry with Kane formula 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 SRK-T Formula for Prediction of refraction Biometry with SRK-T formula 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
- Primary Outcome Measures
Name Time Method Post-operative refractive outcome in diopters 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) 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 1 hour to 1 year The spherical equivalent of the patients will be measured 1 month post-operatively to compare between the two groups
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Fauji Foundation Hospital
🇵🇰Rawalpindi, Punjab, Pakistan