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The comparison of central and mean true-net power (Pentacam) in calculating IOL-power after refractive surgery.

 Jeong-Ho Yi  ;  Joo Youn Shin  ;  Byoung Jin Ha  ;  Sang Woo Kim  ;  Beom Jin Cho  ;  Eung Kweon Kim  ;  Tae-im Kim 
 Korean Journal of Ophthalmology, Vol.23(1) : 1-5, 2009 
Journal Title
 Korean Journal of Ophthalmology 
Issue Date
Adult ; Cornea/pathology* ; Cornea/physiopathology ; Cornea/surgery ; Corneal Topography/methods* ; Female ; Humans ; Lenses, Intraocular* ; Male ; Middle Aged ; Myopia/surgery* ; Prosthesis Design ; Refraction, Ocular* ; Refractive Surgical Procedures*
Corneal true net power ; Intraocular lens implantation ; Pentacam
PURPOSE: To compare the accuracy of central true net corneal power (cTNP) and mean true net corneal power (mTNP) of the Pentacam system to give a keratometry (K) reading for calculating IOL (intraocular lens) power in eyes following refractive surgery. METHODS: Refraction, an automated K-reading (Km), cTNP and mTNP were measured for 15 eyes that required cataract surgery and had previously undergone refractive surgery. The difference between postoperative manifest refraction values and target refraction values calculated with the SRK/T formula using cTNP were compared with the one using mTNP. RESULTS: The mean deviation from the desired post-cataract refractive outcome was 0.60 diopter (D) +/-0.47 (standard deviation) using cTNP; 0.75+/-0.54 using mTNP (p=0.386). The actual refraction was within +/-0.50D of the intended refraction for 60% (cTNP) and 33.3% (mTNP) of eyes, and within +/-1.00D for 93% (cTNP) and 66.7% (mTNP) of eyes. CONCLUSIONS: Although not statistically significant, the cTNP showed better accuracy than mTNP to give a keratometry (K) reading for post-refractive surgery eyes requiring cataract surgery
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1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sang Woo(김상우)
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
Ha, Byoung Jin(하병진)
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