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Relationship between IOP and biomechanical corneal values obtained by ORA
Author(s) -
LOPEZ DE LA FUENTE C,
SANCHEZCANO A,
PINILLA I,
FUENTES BROTO L,
SEGURA CLAVO F
Publication year - 2012
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2012.f004.x
Subject(s) - ophthalmology , intraocular pressure , medicine , biomechanics , linear correlation , positive correlation , cornea , mathematics , anatomy , statistics
Purpose To evaluate the relationship between intraocular pressure (IOP) measurements and corneal biomechanical parameters obtained with Ocular Response Analyser (ORA) in healthy subjects. Methods Sixty‐five eyes from 65 healthy subjects were prospective and consecutively selected. All of them underwent a full optometric examination, including central corneal thickness (CCT) and IOP measured with ORA: ORA Goldmann‐corrected IOP (IOPg) and ORA corneal resistance‐corrected IOP (IOPcc). Pearson correlation coefficients between IOP values and corneal biomechanics parameters obtained by ORA were also calculated. Results IOP parameters, evaluated by Pearson correlation coefficients were significantly correlated with p<0.001; r=0.826 for IOPcc‐IOPg. IOPg was linearly associated with corneal resistance factor (CRF; r=0.619) and with CCT (r=0.579). IOPcc had a linear relationship with CH (r=‐0.482); similar results were obtained with CRF and corneal hysteresis (CH; r=0.841), CRF and CCT (r=0.681) or between CH and CCT (r=0.466). Conclusion IOPcc and IOPg have a positive linear correlation. ORA biomechanics parameters CRF, CH and CCT show also a linear positive relation between them.