Comparison Between Corneal Biomechanics in Normal and Keratoconic Corneas Using Ocular Response Analyzer
Kareem Ahmed Abouelezz;
Abstract
Keratoconus is a corneal ectatic disease characterized by non-inflammatory progressive thinning of unknown cause in which the cornea assumes a conical shape.
The overall prevalence of keratoconus in general population has been estimated to be between 5 and 23 per
10,000, respectively with both sexes equally affected.
Detecting the cases of subclinical keratoconus always has been a challenge for ophthalmologist especially when the suggestive clinical signs and symptoms to differentiate subclinical keratoconus from the normal is not observed.
The Ocular Response Analyzer (ORA) is a noncontact, non-invasive, device that uses a rapid metered collimated air pulse to applanate the cornea. It records inward and outward applanation events and it simultaneously assesses and compensates for the effect of the cornea’s viscous and elastic qualities on IOP measurement. Corneal hysteresis may reflect mostly corneal viscosity; corneal resistance factor may predominantly quantify corneal rigidity. It is an indicator of the overall “resistance” of the cornea, i
The overall prevalence of keratoconus in general population has been estimated to be between 5 and 23 per
10,000, respectively with both sexes equally affected.
Detecting the cases of subclinical keratoconus always has been a challenge for ophthalmologist especially when the suggestive clinical signs and symptoms to differentiate subclinical keratoconus from the normal is not observed.
The Ocular Response Analyzer (ORA) is a noncontact, non-invasive, device that uses a rapid metered collimated air pulse to applanate the cornea. It records inward and outward applanation events and it simultaneously assesses and compensates for the effect of the cornea’s viscous and elastic qualities on IOP measurement. Corneal hysteresis may reflect mostly corneal viscosity; corneal resistance factor may predominantly quantify corneal rigidity. It is an indicator of the overall “resistance” of the cornea, i
Other data
| Title | Comparison Between Corneal Biomechanics in Normal and Keratoconic Corneas Using Ocular Response Analyzer | Other Titles | دراسة مقارنة بين الخصائص الحركية الحيوية في القرنية الطبيعية و القرنية المخروطية باستخدام جهاز محلل الاستجابة البصري | Authors | Kareem Ahmed Abouelezz | Issue Date | 2017 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.