COMPARISON OF DYNAMIC CONTOUR TONOMETERY WITH GOLDMANN APPLANATION TONOMETRY BEFORE AND AFTER KERATOREFRACTIVE SURGERY

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HASHEMI HASAN; BEHESHTNEZHAD A.H.; LOTFI SEDIGH A.

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Journal: JOURNAL OF CURRENT OPHTHALMOLOGY Year:2006 | Volume:19 | Issue:1 Page(s): 15-22

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Title

COMPARISON OF DYNAMIC CONTOUR TONOMETERY WITH GOLDMANN APPLANATION TONOMETRY BEFORE AND AFTER KERATOREFRACTIVE SURGERY

Author(s)

HASHEMI HASAN | BEHESHTNEZHAD A.H. | LOTFI SEDIGH A. | Issue Writer Certificate

Keywords

INTRAOCULAR PRESSUREQ4

GOLDMANN APPLANATION TONOMETRYQ3

DYNAMIC CONTOUR TONOMETRYQ3

Abstract

Purpose: The dynamic contour tonometer (DCT) is a novel tonometer designed to measure lOP independent of corneal properties. The purpose of this study is a comparisonof lOP measured with the DCT and the GOLDMANN APPLANATION TONOMETRY (GAT), before and after keratorefractive surgery.Materials & Methods: In a cross-sectional study of 154 myopic and myopic astigmatism eyes, central corneal thickness (CCT) was measured ultrasonically and lOP measured before and 1 month after LASIK and PRK with DCT and GAT. The correlation between these two methods with each other and eachone with CCT analyzed with linear regression and Pearson Correlation.Results: Mean lOP before surgery with GAT was 17.85±2.64mmHg and after surgery was 13.56±2.64mmHg. Mean lOP before surgery with DCT was 18.79±3.5mmHg and after surgery was 17.39±3.5mm Hg. Corneal ablation of 90.4±5 Micron, reduced lOP readings by GAT and DCT, but this Reduction was significant in GAT in comparison with DCT (P<0.0001).Conclusion: CCT and corneal rigidity causes an error in tonometery. DCT can measure real lOP reading and independent from corneal properties. This study revealed that the lOP measurement with DCT has no Correlation with CCT. (Pearson correlation r=-0.4 and p=0.5).

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APA: Copy

HASHEMI, HASAN, BEHESHTNEZHAD, A.H., & LOTFI SEDIGH, A.. (2006). COMPARISON OF DYNAMIC CONTOUR TONOMETERY WITH GOLDMANN APPLANATION TONOMETRY BEFORE AND AFTER KERATOREFRACTIVE SURGERY. JOURNAL OF CURRENT OPHTHALMOLOGY, 19(1), 15-22. SID. https://sid.ir/paper/53093/en

Vancouver: Copy

HASHEMI HASAN, BEHESHTNEZHAD A.H., LOTFI SEDIGH A.. COMPARISON OF DYNAMIC CONTOUR TONOMETERY WITH GOLDMANN APPLANATION TONOMETRY BEFORE AND AFTER KERATOREFRACTIVE SURGERY. JOURNAL OF CURRENT OPHTHALMOLOGY[Internet]. 2006;19(1):15-22. Available from: https://sid.ir/paper/53093/en

IEEE: Copy

HASAN HASHEMI, A.H. BEHESHTNEZHAD, and A. LOTFI SEDIGH, “COMPARISON OF DYNAMIC CONTOUR TONOMETERY WITH GOLDMANN APPLANATION TONOMETRY BEFORE AND AFTER KERATOREFRACTIVE SURGERY,” JOURNAL OF CURRENT OPHTHALMOLOGY, vol. 19, no. 1, pp. 15–22, 2006, [Online]. Available: https://sid.ir/paper/53093/en

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