Correlation Between Corneal Topographic Patterns and Refractive Status Of The Eye in Sohag City,Egypt

Correlation Between Corneal Topographic Patterns and Refractive Status Of The Eye in Sohag City,Egypt

Sponsors

Lead Sponsor: Sohag University

Source Sohag University
Brief Summary

To evaluate corneal topographic pattern & its correlation with refractive status of the eye .

Detailed Description

This study will be established in The Future Center for refractive surgery, Sohag, Egypt. This study will include 100 eyes of patients aged over 15 years. All patients were subjected to topography imaging. Using Oculus Pentacam® which is s a rotating Scheimpflug camera. The rotational measuring procedure generates Scheimpflug images in three dimensions. The scheimpflug principle describes the optical imaging condition when the plane of an object is not parallel to the film of the camera and has to cut each other in one line or one point of intersection with the advantage to achieve wide depth of focus. Scheimpflug imaging attains a wide and high depth-of-focus , providing sharp images that include information from an anterior corneal surface through to the posterior crystalline capsule; this depends mainly on media transparency and pupil size .

Overall Status Recruiting
Start Date 2022-09-22
Completion Date 2023-03-01
Primary Completion Date 2022-12-01
Phase N/A
Study Type Interventional
Primary Outcome
Measure Time Frame
Thickness 3 months after begin of study
degree of astigmatism in D 3 months after begin of study
maximum keratometry 3 months after begin of study
front and back elevation of the apex (um). 3 months after begin of study
Enrollment 100
Condition
Intervention

Intervention Type: Diagnostic Test

Intervention Name: Using Oculus Pentacam® which is s a rotating Scheimpflug camera. The rotational measuring procedure generates Scheimpflug images in three dimensions.

Description: Scheimpflug imaging attains a wide and high depth-of-focus , providing sharp images that include information from an anterior corneal surface through to the posterior crystalline capsule

Other Name: The scheimpflug principle describes the optical imaging condition

Eligibility

Criteria:

Inclusion Criteria: - Patients aging more than 15 years old - All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). - There is no restrictions on the range and regularity of keratometry. Exclusion Criteria: - Patients with a history of any trauma to the eye. - Patients with recent contact lens wear. - history of ocular surgery . - Patients with distance corrected visual acuity or abnormal retinoscopy examination (e.g., scissoring reflex). 5. If there was any error in reading the topographic map. 6. Patients with anemotropic refraction.

Gender:

All

Minimum Age:

15 Years

Maximum Age:

N/A

Healthy Volunteers:

Accepts Healthy Volunteers

Overall Official
Last Name Role Affiliation
Mohamed Iqbal, MD.PhD Study Chair Sohag Faculty of medicine
Overall Contact

Last Name: Mohamed Iqbal, MD.PhD

Phone: 00201068559840

Email: [email protected]

Location
Facility: Status: Contact: Facultyof medicine Mohamed Iqbal, Md.PhD 00201068559840 [email protected]
Location Countries

Egypt

Verification Date

2022-11-01

Responsible Party

Type: Principal Investigator

Investigator Affiliation: Sohag University

Investigator Full Name: Ahmed Abdallah Abdelaal

Investigator Title: Ophthalmology Resident at Akhemim Central hospital

Keywords
Has Expanded Access No
Number Of Arms 4
Arm Group

Label: group Low Myopia

Type: Experimental

Description: Patients with low myopia aging more than 15 years old All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). There is no restrictions on the range and regularity of keratometry

Label: group high myopia

Type: Experimental

Description: Patients with high myopia aging more than 15 years old All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). There is no restrictions on the range and regularity of keratometry

Label: group Hypermetropia

Type: Experimental

Description: Patients with hypermetropia aging more than 15 years old All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). There is no restrictions on the range and regularity of keratometry

Label: group mixed astigmatism

Type: Experimental

Description: Patients with mixed astigmatism aging more than 15 years old All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). There is no restrictions on the range and regularity of keratometry

Patient Data No
Study Design Info

Allocation: Randomized

Intervention Model: Parallel Assignment

Primary Purpose: Diagnostic

Masking: Single (Participant)

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