Trials Sponsors Conditions Drugs Pricing

Conditions

Myopia

Keywords

Wavefront AberrationLASIKContrast SensitivityVisual PerformanceAblation Profile

Eligibility Criteria

Age0 Years+

Sexall

Healthy VolunteersYes

Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may not qualify if:

Eyes will also be divided into groups by refractive error: Low myopia 0-3D, moderate myopia 3-6D, and high myopia 6-9 D and very high myopia \> 9D MSRE. The size of the Optical Zone and Transitional Zone is measured, and results are compared for patients of similar refractive error (+/- 0.5 S +/- 0.5 C). Analysis is carried out using a matrix analysis of the total refractive error, comparison of Visual Acuity, Contrast Sensitivity and Responses on a Questionnaire to assess the patient's quality of vision.
Equal numbers of eyes from each of the four refractive error groups and from each of the three treatment groups (OATZ profile 5, OATZ profile 6, conventional) will be measured.
We will consider patients operated on by the same doctor (Dr. Lin). We will also compare treatments of patients and wavefront maps of patients who have similar spherical and cylindrical refractive errors.
Table 1. Examination Schedule (Definitions) Visit Time Preoperative Within 30 days of surgery Operative Day Day of surgery

Sponsors & Collaborators

National Taiwan University Hospital
Otherlead

Study Sites (1)

National Taiwan University Hospital

Taipei, Taiwan

RECRUITING

I-Jong Wang, MD, PHDCONTACT886-2-23123456 ext. 5729 ijong@ha.mc.ntu.edu.tw

MeSH Terms

Conditions

Myopia

Condition Hierarchy (Ancestors)

Refractive ErrorsEye Diseases

Study Officials

I-Jong Wang, MD,PHD
National Taiwan University Hospiyal
PRINCIPAL INVESTIGATOR

Central Study Contacts

I-Jong Wang, MD, PHD

CONTACT

886-2-23123456 ijong@ha.mc.ntu.edu.tw

Study Design

Study Type: observational
Observational Model: DEFINED POPULATION
Time Perspective: OTHER
Sponsor Type: OTHER

Study Record Dates

First Submitted

September 12, 2005

First Posted

September 15, 2005

Study Start

June 2005

Date type not reported

This date has not been verified as actual or estimated.

Study Completion

July 2008

Date type not reported

Aberration-Free Refraction Correction

Brief Summary

Registry Overview

Trial Relationships

Study Timeline

Study Start

First Submitted

First Posted

Study Completion

Conditions

Keywords

Eligibility Criteria

You may not qualify if:

Sponsors & Collaborators

Study Sites (1)

MeSH Terms

Conditions

Condition Hierarchy (Ancestors)

Study Officials

Central Study Contacts

Study Design

Study Record Dates

Source record

Locations

Brief Summary

Registry Overview

Trial Relationships

Related Scientific Literature

Study Timeline

Study Start

First Submitted

First Posted

Study Completion

Conditions

Keywords

Eligibility Criteria

You may not qualify if:

Sponsors & Collaborators

Study Sites (1)

MeSH Terms

Conditions

Condition Hierarchy (Ancestors)

Study Officials

Central Study Contacts

Study Design

Study Record Dates

Source record

Locations