Age-related variations in corneal biomechanical properties
نویسندگان
چکیده
منابع مشابه
Age-related variations in corneal biomechanical properties
PURPOSE To determine age-related changes in corneal viscoelastic properties in healthy individuals. METHODS This observational cross-sectional study was performed at the Department of Ophthalmology, Imam Khomeini Hospital, Ahvaz, Iran and included 302 healthy individuals in 6 age decades (range: 10-69 years). After complete ocular examination, corneal viscoelastic properties were measured by ...
متن کاملCharacterization of age-related variation in corneal biomechanical properties.
An experimental study has been conducted to determine the stress-strain behaviour of human corneal tissue and how the behaviour varies with age. Fifty-seven well-preserved ex vivo donor corneas aged between 30 and 99 years were subjected to cycles of posterior pressure up to 60 mm Hg while monitoring their behaviour. The corneas were mechanically clamped along their ring of scleral tissue and k...
متن کاملAge-Related Variations of Rabbit Corneal Geometrical and Clinical Biomechanical Parameters
Purpose To study the variations in corneal clinical biomechanical parameters (CCBP) and corneal geometrical parameters of rabbit in relation to age. Methods Rabbits aged 3, 7, 12, 18, and 24 months were enrolled. Each eye of the rabbits was tested with Ocular Response Analyzer (ORA), Optical Coherence Tomography (OCT), and Pachymeter to obtain the intraocular pressure (IOP): Goldmann-correlat...
متن کاملCorneal thickness- and age-related biomechanical properties of the cornea measured with the ocular response analyzer.
PURPOSE The Ocular Response Analyzer (ORA) is a new instrument that measures the corneal biomechanical response (corneal hysteresis, CH) to rapid indentation by an air jet. CH is the difference in applanation pressures (P1, P2) between the rising and falling phases of the air jet. The investigation had two parts: a characterization study and a validation study. In the characterization study, th...
متن کاملCorneal biomechanical properties at different corneal cross-linking (CXL) irradiances.
PURPOSE New corneal cross-linking (CXL) devices are capable of using higher UV-A light irradiances than used in original CXL protocols. The Bunsen-Roscoe law states that a photochemical reaction should stay constant if the delivered total energy is kept constant; however, little clinical data are available to support this hypothesis. METHODS We investigated the biomechanical properties of fou...
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ژورنال
عنوان ژورنال: Journal of Current Ophthalmology
سال: 2016
ISSN: 2452-2325
DOI: 10.1016/j.joco.2016.05.004