The pachymeter guide: a new device to facilitate accurate corneal thickness measurement.
نویسندگان
چکیده
A pachymeter guide has been developed to facilitate precise positioning of the ultrasonic pachymeter tip, making corneal thickness measurement much faster and more reproducible. This guide also makes pachymetry more accurate by preventing dehydration of the cornea, avoiding undue pressure on the cornea, and limiting tilting of the pachymeter tip.
منابع مشابه
Central corneal thickness measurement with the Pentacam Scheimpflug system, optical low-coherence reflectometry pachymeter, and ultrasound pachymetry.
PURPOSE To assess the intraoperator repeatability and interoperator reproducibility of central corneal thickness measurements by the Pentacam Scheimpflug imaging system (Oculus) and the optical low-coherence reflectometer (OLCR) pachymeter (Haag-Streit) and to compare them with those of ultrasound (US) pachymetry. SETTING Assaf Harofe Medical Center Ophthalmology Outpatient Clinic, Zerifin, I...
متن کاملMeasurement of central corneal thickness by ultrasonic pachymeter and oculus pentacam in patients with well-controlled glaucoma: hospital-based comparative study
BACKGROUND The measurement of central corneal thickness (CCT) plays an important role in the diagnosis and treatment of glaucoma and many corneal diseases. OBJECTIVE OF THE STUDY To compare the measurement of CCT by ultrasonic pachymeter with that measured by oculus pentacam in both normal subjects and patients with well-controlled glaucoma. PATIENTS AND METHODS In 173 eyes of both controls...
متن کاملComparison of optical coherence reflectometry and ultrasound central corneal pachymetry.
In 50 eyes of 25 patients we prospectively measured the central corneal thickness (CCT) comparing the OLCR (Optical Low Coherence Reflectometry) pachymeter with the contact ultrasound pachymeter. The OLCR system was mounted on to a Haag-Streit slit lamp. Every single measurement was the result of 5 scans. With the contact ultrasound Sonomed pachymeter we performed 5 separate measurements and ca...
متن کاملAn Algorithm for Accurate Measurement of Corneal Thickness Using Ultrasound RF Signal
A faster and more accurate method for the detection of corneal thickness using an ultrasonic pulse-echo technique was proposed. The corneal thickness was calculated from the time interval between the two echoes reflected at front and rear interfaces of the cornea. The time interval between two echoes was obtained by detecting the peaks of the digitized echoes. A phase-adjusting method, which is...
متن کاملCorneal thickness measurements with the Topcon SP-2000P specular microscope and an ultrasound pachymeter.
OBJECTIVE To compare the reproducibility of measurements obtained with a new pachymetry instrument, the Topcon specular microscope (Topcon SP-2000P; Topcon America Corp, Paramus, NJ), with those obtained by ultrasound pachymetry. METHODS Corneal thickness was measured in 40 eyes of 40 patients 3 times each with the Topcon SP-2000P and an ultrasound pachymeter (DGH 500, DGH Technology Inc, Ext...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Japanese journal of ophthalmology
دوره 41 6 شماره
صفحات -
تاریخ انتشار 1997