Prevelance of Keratoconus

Prevelance of Keratoconus in Individuals Attending Refreactive Surgery Centers in Assiut

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04092426

Enrollment

300

Registered

2019-09-17

Start date

2019-10-01

Completion date

2021-10-01

Last updated

2019-09-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Keratoconus

Brief summary

Keratoconus is a degenerative disease entity characterized by conical shape ectasia of the cornea. progressive conical deformation of the cornea leads to substantial astigmatism. Patients who are at an advanced stage of ectasia are often led to corneal transplant or other treatments, which essentially aim at correcting the refractive error and not in treating the ectasia. The top of the protruding cone that corneal configuration may be close to the visual axis or below and nasal of that. The disease manifests during adolescence, followed by slow progressive course, although it is possible to stabilize anytime. In 85% of cases both eyes are affected, but the severity of the attack can present significant asymmetry.

Detailed description

Often in keratoconus a positive family history is present. Prevelance of keratoconus varies greatly worldwide.The reported prevalence of keratoconus varies widely depending upon the geographic location, diagnostic criteria used, and the cohort of patients selected. Environmental factors may contribute to the wide variation in prevalence. the Middle East have higher prevalence than locations with cooler climates and less sunshine

Interventions

OTHERopthalmologic examination

opthalmologic examination : Refraction Best corrected visual acuity Intraocular pressure Slit lamp examination

Study design

Observational model

CASE_ONLY

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Inclusion criteria

1. persons attending refractive surgery centers in Asssiut. 2. patients found to have keratoconus are included , based on history , clinical examination and corneal topography

Exclusion criteria

: 1. patients not attending those refractive surgery centers. 2. patients attending these centers but not diagnosed to be keratoconus . 3. Pregnancy or breastfeeding

Design outcomes

Primary

Measure	Time frame	Description
Prevalence of keratoconus in different areas in assiut	one year	Number of keratoconus cases detected areas in indivduals attending refractive surgery centers in Assiut

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026