INTRAOCULAR LENS POWER CALCULATION AFTER KERATOREFRACTIVE SURGERY

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JAVADI M.A.; MIRBABAEI GHAFGHAZI F.; NAZARI R.; JAFARINASAB M.R.

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Journal: BINA Year:2007 | Volume:12 | Issue:2 (47) Page(s): 221-226

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Title

INTRAOCULAR LENS POWER CALCULATION AFTER KERATOREFRACTIVE SURGERY

Author(s)

JAVADI M.A. | MIRBABAEI GHAFGHAZI F. | NAZARI R. | JAFARINASAB M.R. | Issue Writer Certificate

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Abstract

Purpose: To determine corneal power for intraocular lens (IOL) power calculation in eyes with previous keratorefractive surgery.Methods: In 13 eyes of 9 patients with previous keratorefractive surgery undergoing phacoemulcification, IOL power was calculated using the clinical history method (CHM) in one case, manual keratometry (MKR) in 2, SimK in 3, and flattest K (topographically derived) in 7 cases. SRK-T formula with applanation method was used, Final refractions (SE) are presented.Results: Patients included 7 male and 2 female subjects aged 51.2±9.3 (range 41-70 years). Postoperative refraction was hyperopic (+1.5 D) in eyes with the CHM, variable and unpredictable in cases with the MKR and SimK and more desirable (-0.35±0.39 D) in cases of flattest K. In this latter group the best postoperative refraction was achieved in cases which 0.5 to 1.00 D was added to the calculated IOL power.Conclusion: It seems using topographically derived flattest K for IOL power calculation and adding 1.00 D to the calculated IOL power in eyes with previous myopic-refractive surgery, and using the steepest K together with subtracting 1.00D from the calculated IOL power in eyes with previous hyperopic-refractive surgery is useful when pre-refractive surgery data are not available.

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APA: Copy

JAVADI, M.A., MIRBABAEI GHAFGHAZI, F., NAZARI, R., & JAFARINASAB, M.R.. (2007). INTRAOCULAR LENS POWER CALCULATION AFTER KERATOREFRACTIVE SURGERY. BINA, 12(2 (47)), 221-226. SID. https://sid.ir/paper/42746/en

Vancouver: Copy

JAVADI M.A., MIRBABAEI GHAFGHAZI F., NAZARI R., JAFARINASAB M.R.. INTRAOCULAR LENS POWER CALCULATION AFTER KERATOREFRACTIVE SURGERY. BINA[Internet]. 2007;12(2 (47)):221-226. Available from: https://sid.ir/paper/42746/en

IEEE: Copy

M.A. JAVADI, F. MIRBABAEI GHAFGHAZI, R. NAZARI, and M.R. JAFARINASAB, “INTRAOCULAR LENS POWER CALCULATION AFTER KERATOREFRACTIVE SURGERY,” BINA, vol. 12, no. 2 (47), pp. 221–226, 2007, [Online]. Available: https://sid.ir/paper/42746/en

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