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

Sohag University

Status: Enrolling

Conditions: Eye Change

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

Study type: Interventional

Funder types: Other

Identifiers

NCT05626075

Soh-Med-22-07-2014

Details and patient eligibility

About

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

Full 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 .

Enrollment: 100 estimated patients

Sex: All

Ages: 15+ years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Diagnostic

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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100 participants in 4 patient groups

group Low Myopia

Experimental group

Description:

1. Patients with low myopia aging more than 15 years old 2. All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). 3. There is no restrictions on the range and regularity of keratometry

Treatment:

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

group high myopia

Experimental group

Description:

1. Patients with high myopia aging more than 15 years old 2. All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). 3. There is no restrictions on the range and regularity of keratometry

Treatment:

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

group Hypermetropia

Experimental group

Description:

1. Patients with hypermetropia aging more than 15 years old 2. All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). 3. There is no restrictions on the range and regularity of keratometry

Treatment:

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

group mixed astigmatism

Experimental group

Description:

1. Patients with mixed astigmatism aging more than 15 years old 2. All patients are with visual acuity (uncorrected, with habitual correction, and best spectacle correction). 3. There is no restrictions on the range and regularity of keratometry

Treatment:

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