NCT03450213

Astigmatism in Keratoconus Patients

Comparison of Anterior and Posterior Corneal Astigmatism in Patients With Keratoconus and Controls

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 100 (estimated)
• Sponsor: Assiut University · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Accepted

Summary

Keratoconus is a bilateral (but usually asymmetrical) non-inflammatory progressive thinning process of the cornea. It manifests as characteristic cone-like ectasia of the cornea associated with irregular stromal thinning, resulting in a cone-like bulge , which causing irregular astigmatism and vision impairment.

Detailed description

Keratoconus is the most common form of corneal ectasia, with an incidence of 50-230 per 100,000 persons.Pentacam used diagnose \& detect the progression in patients with keratoconus and also provide a detailed information about corneal tomography and topography. In the last few years, it has been shown that in healthy individuals the posterior corneal surface has not only a different amount of astigmatism but also a different alignment of the steep meridian. The aim of this research is to compare the amount and axis alignment of anterior and posterior corneal astigmatism in keratoconus with a healthy controlled group .

Conditions

• Keratoconus

Interventions

Type	Name	Description
DEVICE	Pentacam	Pentacam will be used to measure the magnitude and axis orientation of anterior and posterior corneal astigmatism.

Timeline

• Start date: 2019-10-01
• Primary completion: 2020-10-01
• Completion: 2021-10-01
• First posted: 2018-03-01
• Last updated: 2018-10-17