Recruitment

Recruitment Status
Completed

Inclusion Criterias

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
Patients who have a clinical central corneal edema after clear cornea phacoemulsification and intraocular lens implantation
Age more than 18 year-old

Exclusion Criterias

Clear cornea phacoemulsification that has suture on the cornea
Severe dry eye syndrome
Known allergy to fluorescein solution
...
Clear cornea phacoemulsification that has suture on the cornea
Severe dry eye syndrome
Known allergy to fluorescein solution
Corneal opacities or diseases making no suitable tonometry
Known allergy to topical anesthesia
Astigmatism higher than 2.5 diopters
Vitrectomized eye
History of diabetic retinopathy staged as severe non-proliferative or worse
Subjects with having poor or eccentric fixation or nystagmus
Combined phacoemulsification and trabeculectomy
History of refractive surgery or any keratoplastic procedure
Excessive eye squeezing
Microphthalmos or buphthalmos
Previous history of intraocular surgery, ocular trauma prior to phacoemulsification
Pregnant or breast-feeding women
History of glaucoma or ocular hypertension or using IOP lowering medication
Wears contact lenses

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 Criterias

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
Patients who have a clinical central corneal edema after clear cornea phacoemulsification and intraocular lens implantation
Age more than 18 year-old

Exclusion Criterias

Clear cornea phacoemulsification that has suture on the cornea
Severe dry eye syndrome
Known allergy to fluorescein solution
...
Clear cornea phacoemulsification that has suture on the cornea
Severe dry eye syndrome
Known allergy to fluorescein solution
Corneal opacities or diseases making no suitable tonometry
Known allergy to topical anesthesia
Astigmatism higher than 2.5 diopters
Vitrectomized eye
History of diabetic retinopathy staged as severe non-proliferative or worse
Subjects with having poor or eccentric fixation or nystagmus
Combined phacoemulsification and trabeculectomy
History of refractive surgery or any keratoplastic procedure
Excessive eye squeezing
Microphthalmos or buphthalmos
Previous history of intraocular surgery, ocular trauma prior to phacoemulsification
Pregnant or breast-feeding women
History of glaucoma or ocular hypertension or using IOP lowering medication
Wears contact lenses

Locations

Hat Yai, Songkhla, 90110
Hat Yai, Songkhla, 90110

Tracking Information

NCT #
NCT01998568
Collaborators
Not Provided
Investigators
  • Principal Investigator: Weerawat Kiddee, MD Prince of Songkla University
  • Weerawat Kiddee, MD Prince of Songkla University