Reliability of biometry.

Ganapathi Rajesh, S (2006) Reliability of biometry. Masters thesis, Madras Medical College, Chennai.


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INTRODUCTION: The refractive power of Pseudophakos is final and the patient must live with any mistake committed (or) be subjected to a very dangerous operation, namely, to the removal and replacement of the intraocular lens (IOL). To ensure that our patient will have the optimal correction, the power of the lens to be implanted must be determined precisely and perfectly in every case. AIM OF THE STUDY: To study the reliability of A–scan biometry in Tertiary Institution where measurements were taken by multiple persons. MATERIALS AND METHODS: A retrospective series of 110 cases of cataract extraction and in the bag fixation of the IOL done in RIO-GOH were investigated. Cataract extraction done by 1) extra capsular cataract extraction 2) small incision cataract surgery and 3) phacoemulsification were included in the study. CONCLUSION: With the evolution of small incision techniques that minimize surgically induced astigmatism, IOL power selection becomes a crucial step for the refractive outcome of cataract surgery. The present study has shown that in Institution where multiple persons perform Biometry chances of postoperative refractive error can be minimized if precise and proper technique is followed and it is possible to have prediction errors below 1.00 D on the average. The chance of postoperative refractive error could be further reduced if SRK T formula is used for IOL power calculation.

Item Type: Thesis (Masters)
Uncontrolled Keywords: biometry; intraocular lens
Subjects: MEDICAL > Ophthalmology
Depositing User: Devi S
Date Deposited: 01 Aug 2017 10:40
Last Modified: 01 Aug 2017 10:40

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