Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational
Official Title: The Variation of the Intraocular Pressure Measured by Different Tonometers in Patients With Clinical Corneal Edema
Brief Summary: The investigators conduct this study to access the effect of corneal edema (the investigators are particularly interested in those who have the clinical central corneal edema) on the variation of intraocular pressure values measured by 3 commercial-available tonometers compare to the current gold standard tonometer; Goldmann applanation tonometer.