The Intraocular Pressure Measured by Different Tonometers in Corneal Edema
Last updated on April 2022Recruitment
- Recruitment Status
- Completed
Inclusion Criteria
- Patients who have a clinical central corneal edema after clear cornea phacoemulsification and intraocular lens implantation
- Age more than 18 year-old
- Agree to participate in the study and willing to sign an informed consent
- Patients who have a clinical central corneal edema after clear cornea phacoemulsification and intraocular lens implantation
- Age more than 18 year-old
- Agree to participate in the study and willing to sign an informed consent
Exclusion Criteria
- Severe dry eye syndrome
- Previous history of intraocular surgery, ocular trauma prior to phacoemulsification
- Known allergy to fluorescein solution
- ...
- Severe dry eye syndrome
- Previous history of intraocular surgery, ocular trauma prior to phacoemulsification
- Known allergy to fluorescein solution
- History of glaucoma or ocular hypertension or using IOP lowering medication
- Wears contact lenses
- Known allergy to topical anesthesia
- Combined phacoemulsification and trabeculectomy
- Excessive eye squeezing
- History of refractive surgery or any keratoplastic procedure
- Vitrectomized eye
- Pregnant or breast-feeding women
- Clear cornea phacoemulsification that has suture on the cornea
- Microphthalmos or buphthalmos
- History of diabetic retinopathy staged as severe non-proliferative or worse
- Corneal opacities or diseases making no suitable tonometry
- Subjects with having poor or eccentric fixation or nystagmus
- Astigmatism higher than 2.5 diopters
Summary
- Conditions
- Corneal Edema
- Intraocular Pressure
- Type
- Observational
- Design
- Observational Model: Case-Only
- Time Perspective: Cross-Sectional
Participation Requirements
- Age
- Between 18 years and 125 years
- Gender
- Both males and females
Description
Previous published articles reported on the effect of corneal edema on the accuracy of tonometry were performed in enucleated cadaver eyes, or contact lens-induced corneal edema eyes. Thus, it remains unclear as to how the clinical corneal edema that is found in routine clinical practice will affect...
Previous published articles reported on the effect of corneal edema on the accuracy of tonometry were performed in enucleated cadaver eyes, or contact lens-induced corneal edema eyes. Thus, it remains unclear as to how the clinical corneal edema that is found in routine clinical practice will affect the variation of intraocular pressure measurement using the standard Goldmann applanation tonometer and other more modern tonometers such as the dynamic contour tonometer, the iCare, and the Tonopen.
Inclusion Criteria
- Patients who have a clinical central corneal edema after clear cornea phacoemulsification and intraocular lens implantation
- Age more than 18 year-old
- Agree to participate in the study and willing to sign an informed consent
- Patients who have a clinical central corneal edema after clear cornea phacoemulsification and intraocular lens implantation
- Age more than 18 year-old
- Agree to participate in the study and willing to sign an informed consent
Exclusion Criteria
- Severe dry eye syndrome
- Previous history of intraocular surgery, ocular trauma prior to phacoemulsification
- Known allergy to fluorescein solution
- ...
- Severe dry eye syndrome
- Previous history of intraocular surgery, ocular trauma prior to phacoemulsification
- Known allergy to fluorescein solution
- History of glaucoma or ocular hypertension or using IOP lowering medication
- Wears contact lenses
- Known allergy to topical anesthesia
- Combined phacoemulsification and trabeculectomy
- Excessive eye squeezing
- History of refractive surgery or any keratoplastic procedure
- Vitrectomized eye
- Pregnant or breast-feeding women
- Clear cornea phacoemulsification that has suture on the cornea
- Microphthalmos or buphthalmos
- History of diabetic retinopathy staged as severe non-proliferative or worse
- Corneal opacities or diseases making no suitable tonometry
- Subjects with having poor or eccentric fixation or nystagmus
- Astigmatism higher than 2.5 diopters
Tracking Information
- NCT #
- NCT01998568
- Collaborators
- Not Provided
- Investigators
- Principal Investigator: Weerawat Kiddee, MD Prince of Songkla University
- Weerawat Kiddee, MD Prince of Songkla University