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Contribution of Posterior Corneal Astigmatism to Total Corneal Astigmatism in a Sample of Egyptian Population

NCT04393740 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 356

Last updated 2020-05-19

No results posted yet for this study

Summary

The magnitude of posterior corneal astigmatism was considered negligible due to the smaller difference in the refractive index between the cornea and the aqueous .

though ,neglecting the posterior corneal astigmatism lead to errors during calculation of the toric iols (over or under estimation ) .

so we aim to determine the percentage of contribution of posterior corneal astigmatism to total corneal astigmatism in a sample of Egyptian population using scheimpflug imaging (Pentacam ).

Conditions

  • Corneal Astigmatism

Interventions

DIAGNOSTIC_TEST

scheimpflug imaging using pentacam

corneal tomography imaging using pentacam device (based on Scheimpflug principle )

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-04-15
Primary Completion
2020-07-15
Completion
2020-08-15
FDA Device
Yes

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04393740 on ClinicalTrials.gov