Digital Repository

Does Sanders-Retzlaff-Kraff (SRK-2) formula suit a Sri Lankan population in phacoemulsification cataract surgery of medium axial length?

Show simple item record

dc.contributor.author Amaratunge, M.S.
dc.contributor.author de Silva, J.
dc.contributor.author Wasthuhewaarachchi, I.M.
dc.contributor.author Uyangoda, S.H.
dc.contributor.author Mallawaarachchi, M.A.J.I.
dc.contributor.author Premaratna, R.
dc.contributor.author Nishad, A.A.N.
dc.date.accessioned 2016-03-30T07:36:32Z
dc.date.available 2016-03-30T07:36:32Z
dc.date.issued 2012
dc.identifier.citation Sri Lanka Medical Association, 125th International Medical Congress. 2012;57 Suppliment1: 138 en_US
dc.identifier.issn 0009-0895
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/12390
dc.description Poster Presentation Abstract (PP 140), 125th Anniversary Scientific Medical Congress, Sri Lanka Medical Association, June 2012 Colombo, Sri Lanka en_US
dc.description.abstract INTRODUCTION: After introduction of phacoemulsification with small incision techniques, intraocular lens (IOL) power calculation predictionhas become a crucial step for good refractive outcomes. SRK-2 formula is widely used for that purpose in many locations. AIMS: To evaluate the predictive accuracy of post operative refraction using SRK-2 formula in phacoemulsification of eyes with 22-26mm axial length. METHODS: Patients with senile cataracts undergoing phacoemulsification and IOL during 2011 in Gampaha district by a single surgeon were selected randomly. Single examiner measured simulated manual keratometry preoperatively, seven days postoperatively. Uncorrected visual acuity, slit lamp examination of anterior segment and best spectacle-corrected visual acuity (BSCVA) were measured. The implanted IOL power was used to calculate the predicted postoperative refractive error using time SRK-2 formula. RESULTS: Of 274 patients (56% females, mean (SD) age 65.3(10) years), the right eye was operated in 142(51.8%). On postoperative seventh day, 79% had VA of 6/6 and 14% to 6/9, 4% to 6/12 to 6/36 in the operated eye. Mean (SD) of IOL power used 21.50 (1.90)D. The predicted refractive error with SRK-2 was -0.3(0.145)0 and the achieved refractive error was -0.22(0.732)0. Difference between predicted and achieved refractive error presented a slight hyperopic shift (mean(SD) 0.054(0.397)0}. There was a negative Pearson correlation (-0.126) between the predicted refractive error and achieved refractive error (p=0.04). Predictive error was less than 0.5 in 80.2%, <0.75 in 88.6% and <1.0 in 96.7%. CONCLUSIONS: SRK-2 formula is a good option to predict the refractive error after cataract extraction by phacoemulsification in eyes with medium axial length. en_US
dc.language.iso en_US en_US
dc.publisher Sri Lanka Medical Association en_US
dc.subject (SRK-2) en_US
dc.title Does Sanders-Retzlaff-Kraff (SRK-2) formula suit a Sri Lankan population in phacoemulsification cataract surgery of medium axial length? en_US
dc.type Article en_US


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

  • Conference Papers
    Papers presented at local and international conferences by the Staff of the Faculty of Medicine

Show simple item record

Search Digital Repository


Browse

My Account