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.
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 .
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SCREENING
Masking
NONE
Enrollment
100
Pentacam will be used to measure the magnitude and axis orientation of anterior and posterior corneal astigmatism.
Comparison between astigmatism in patients with keratoconus and normal people.
Pentacam will be used for comparison between astigmatism in patients with keratoconus and normal people at the same age and sex
Time frame: Two years
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