Corneal Topography and High Order Aberrations in Regular Contraceptive Pills

July 3, 2026 updated by: Elshimaa A.Mateen

Corneal Topography and High Order Aberrations in Women on Regular Contraceptive Pills

Effect of regular usage of contraceptive pills on corneal topography and corneal high-order aberrations

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Comparing corneal topographic changes and corneal high-order aberrations for women planning to use oral contaceptive pills before and after the usage of the pills

Study Type

Observational

Enrollment (Actual)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
    • Sohag Governorate
      • Sohag, Sohag Governorate, Egypt, 82524
        • Ophthalmology Department, Sohag University Hospital, Faculty of Medicine, Sohag University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Premenopausal women aged 18-40 years attending the Ophthalmology Department at Sohag University Hospital who are prescribed combined oral contraceptive pills by their gynecologist as part of routine clinical care. Participants will undergo corneal topography and tomography before starting treatment and after 1 year of oral contraceptive use.

Description

Inclusion Criteria:

  • Female participants aged 18-40 years.
  • Prescribed combined oral contraceptive pills as part of routine gynecological care.
  • Willing to undergo corneal topography/tomography before starting treatment and after 1 year.
  • No previous history of corneal disease or ocular surgery.
  • Able to provide informed consent.

Exclusion Criteria:

  • Keratoconus or suspected corneal ectasia.
  • Corneal opacity, dystrophy, degeneration, or scarring.
  • Previous ocular surgery or significant ocular trauma.
  • Current contact lens use or recent contact lens use without adequate discontinuation period.
  • Active ocular surface disease or severe dry eye.
  • Glaucoma, uveitis, retinal disease, or other significant ocular pathology.
  • Diabetes mellitus, autoimmune disease, thyroid disease, pregnancy, or lactation.
  • Use of other hormonal therapy or systemic medications known to affect corneal parameters.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Oral contraceptive pills users
Other: Hormonal Contraception
Effect of usage of hormonal contraceptive pills on corneal topography and corneal high-order aberrations
Drug: Combined Oral Contraceptive (COC)
Participants who are prescribed combined oral contraceptive pills as part of routine clinical care will be observed. Corneal topography and tomography will be performed before starting treatment and after the follow-up period to evaluate changes in corneal parameters.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Change in K1 (D)
Time Frame: Baseline and 1 year
Baseline and 1 year
Change in K2 (D)
Time Frame: one year
one year
Change in Kmax (D)
Time Frame: one year
one year
change in corneal thickness (um)
Time Frame: one year
one year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Elshimaa A.Mateen

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2024

Primary Completion (Actual)

January 30, 2026

Study Completion (Actual)

March 30, 2026

Study Registration Dates

First Submitted

June 26, 2026

First Submitted That Met QC Criteria

July 3, 2026

First Posted (Actual)

July 9, 2026

Study Record Updates

Last Update Posted (Actual)

July 9, 2026

Last Update Submitted That Met QC Criteria

July 3, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Soh-Med-24-09-15PD

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Cornea

Clinical Trials on Hormonal Contraception

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Thailand

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe