Tomographic Analysis of Anterior, Posterior, Total Corneal Refractive Power Changes After Laser-assisted Keratotomy

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

23 participants

Study Classification

OBSERVATIONAL

Study Start Date

2013-06-06

Study Completion Date

2014-07-31

Brief Summary

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To analyze the effect of femtolaser-assisted keratotomy on corneal astigmatism (anterior, posterior and Total corneal refractive power) measured by Scheimpflug tomography after laser lens surgery.

Detailed Description

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This study investigated patients' eyes with low to moderate total corneal refractive power determined with Scheimpflug tomography (Pentacam HR) after penetrating femtosecond laser-assisted keratotomy (pFLAK) and laser lens surgery. The anterior corneal astigmatism, posterior corneal astigmatism and total corneal refractive power were determined before, 1 month and 3 months after lens surgery. Vector analysis according to the Alpins' method was used to calculate surgically induced astigmatism (SIA).

Conditions

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Corneal Astigmatism

Keywords

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laser-assisted keratotomy anterior astigmatism posterior astigmatism total corneal refractive power nomogram

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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Laser keratotomy

Penetrating femtosecond laser assisted keratotomy to treat preexisting corneal astigmatism during lens surgery.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

\- Patients who received penetrating femtosecond laser-assisted lens surgery with low to moderate corneal astigmatism

Exclusion Criteria

* Eyes with irregular corneal astigmatism such as keratoconus, previous corneal surgery, acute or chronic ophthalmic diseases of the anterior segment and intraoperative complications were not included in this study.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Responsible Party

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Myriam Böhm

Professor Dr. med. Thomas Kohnen

Responsibility Role PRINCIPAL_INVESTIGATOR

Other Identifiers

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140/13

Identifier Type: -

Identifier Source: org_study_id