NCT01230164

Completed

Comparison of Four Different Aberrometers for Evaluation of ...

Massachusetts Eye and Ear Infirmary Source

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Other study identifiers

Sponsor study identifier

09-03-016

Study Type

observational

Actual enrollment (reported)

21

Locations

1 country

Sites

1

Timeline

Study Start

August 2010

Date type not reported

This date has not been verified as actual or estimated.

Primary Completion

July 2011

Actual (reported)

Study Completion

July 2011

Actual (reported)

Brief Summary

An aberrometer measures visual aberrations by mapping how light rays travel through the eye and by providing maps using colored gradients to represent the magnitude of refractive errors of the eye. The purpose of this study is to compare 4 different aberrometers -Wavescan (Visx Technology), Zywave (Bausch \& Lomb), Ladarwave aberrometer (Alcon Inc.) and Allegro Analyzer (Alcon Inc). In particular, the investigators propose to focus on the ability of these devices to display the higher order visual aberrations and to compare the quality of outputs from these 4 devices in normal healthy subjects.

Registry Overview

Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.

Recruitment status: completed
Actual enrollment (reported): 21 participants
Study completion date: July 2011
Actual (reported)
Listed locations: 1 countries · 1 sites

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.

Study Start
August 2010
Date type not reported
This date has not been verified as actual or estimated.
First Submitted
October 27, 2010
Actual (reported)
First Posted
October 28, 2010
Actual (reported)
Primary Completion
July 2011
Actual (reported)
Study Completion
July 2011
Actual (reported)

Last Updated: December 21, 2011
Status Verified: December 2011
Last Update Submitted: December 19, 2011

Conditions

Normal Individuals With Visual Aberrations

Eligibility Criteria

Age18 Years+

Sexall

Healthy VolunteersYes

Age GroupsAdult (18-64), Older Adult (65+)

Sampling MethodNon-Probability Sample

Study Population

Normal subjects over the age of 18 with visual abberations.

You may qualify if:

male or female, at least 18 years of age
no ocular abnormality other than refractive error
patient in generally good \& stable overall health
has not worn contact lenses (hard or gas permeable lenses for at least 3 weeks and soft lenses for at least 3 days) prior to the study exam
corneal topography must be normal, as judged by the investigator

Sponsors & Collaborators

Massachusetts Eye and Ear Infirmary
Otherlead

Study Sites (1)

Massachusetts Eye and Ear Infirmary

Boston, Massachusetts, 02114, United States

Study Officials

Roberto Pineda, MD
Massachusetts Eye and Ear Infirmary
PRINCIPAL INVESTIGATOR

Enrollment

21 participants (actual enrollment reported by the registry).

Study Design

Study Type: observational
Time Perspective: PROSPECTIVE
Sponsor Type: OTHER
Responsible Party: SPONSOR

Study Record Dates

First Submitted

October 27, 2010

First Posted

October 28, 2010

Study Start

August 2010

Date type not reported

This date has not been verified as actual or estimated.

topical anesthesia and mydriatics must be tolerated

patient must be able to fixate steadily

ability to understand and provide informed consent to participate in this study

You may not qualify if:

history of ocular surgery
history of ocular trauma, infection, disease, or abnormality other than refractive error
myopia or hyperopia \> 7.0 D, astigmatism \>3.0 D
uncorrectable visual acuity below 20/20
abnormal corneal topography pattern including, but not limited to keratoconus, forme fruste keratoconus, or corneal warpage
pupil sizes below 6.0 mm under mydriasis
iris problems including, but not limited to, coloboma and previous iris surgery
ocular media problems, corneal, lens and/or vitreous opacities including, but not limited to cataract
ocular movement abnormalities including, but not limited to, strabismus or nystagmus
phenol red thread test (Zone Quick-Menicon Ltd) less than 9 mm/15 seconds
pregnancy and lactation

Contact the study team to confirm eligibility.

Primary Completion

July 2011

Actual (reported)

Study Completion

July 2011

Actual (reported)

Last Updated

December 21, 2011

Record last verified: 2011-12

Source record

Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.

Source: ClinicalTrials.gov.

JSON downloads include source attribution and retrieval details alongside the unchanged original record or the separately normalized values.

Registry identifier: NCT01230164
Data provider: ClinicalTrials.gov
Source updated: 2011-12-21
Normalization version: ctgov-legacy-1

Open registry record

Source retrieved: 2026-10-25 22:20:38 UTC

Locations

US(1)

Brief Summary

Registry Overview

Trial Relationships

Related Scientific Literature

Study Timeline

Study Start

First Submitted

First Posted

Primary Completion

Study Completion

Conditions

Eligibility Criteria

You may qualify if:

Sponsors & Collaborators

Study Sites (1)

Study Officials

Enrollment

Study Design

Study Record Dates

You may not qualify if:

Source record

Locations