Ignite Creation Date:
2024-05-05 @ 11:29 AM
Last Modification Date:
2024-10-26 @ 9:08 AM
Study NCT ID:
NCT00050466
Status:
COMPLETED
Last Update Posted:
2008-03-04
First Post:
2002-12-09
Brief Title:
Dynamic Light Scattering and Keratoscopy for Corneal Examination
Sponsor:
National Eye Institute NEI
Organization:
National Institutes of Health Clinical Center CC
Study Overview
Official Title:
A Pilot Study Using the Dynamic Light Scattering Device DLS Combined With Keratoscopy on the Cornea in Vivo
Status:
COMPLETED
Status Verified Date:
2005-09
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This pilot study will examine the usefulness of a new instrument called the Dynamic Light Scattering DLS device for documenting and monitoring changes in the cornea the front part of the eye where contact lenses are placed The DLS device uses a low-intensity laser similar to that used in supermarket checkouts to measure the cloudiness of the cornea The results of this study may lead to further investigations using DLS to discover the cause of corneal clouding and to develop treatments to prevent it
Healthy volunteers and patients with corneal clouding or opacification 18 years of age and older may be eligible for this study
Participants will have a standard eye examination including a check of visual acuity and eye pressure The retina will also be examined and photographs of the cornea may be taken For the DLS test the subject sits in front of the device and looks at a yellow-green target while the cloudiness of the cornea is measured Subjects will be tested four times The entire procedure takes less than 30 minutes
Healthy volunteers and patients with corneal clouding or opacification 18 years of age and older may be eligible for this study
Participants will have a standard eye examination including a check of visual acuity and eye pressure The retina will also be examined and photographs of the cornea may be taken For the DLS test the subject sits in front of the device and looks at a yellow-green target while the cloudiness of the cornea is measured Subjects will be tested four times The entire procedure takes less than 30 minutes
Detailed Description:
Corneal disease and injuries are the leading cause of visits to eye care clinics in the US today These diseases are also some of the most painful eye disorders Two important areas for research on the cornea are 1 to explore and understand the molecular basis of corneal transparency and 2 to analyze the molecular nature of corneal inflammation and wound healing We have developed a new clinical device to understand molecular changes that occur in the lens called Dynamic Light Scattering DLS device Studies have shown its potential in the detection of the earliest changes occurring in the cataract and have also shown good test retest reproducibility of the system We now would like to apply this technique to study changes that occur in corneal opacification In this pilot project we would like to study the normal cornea in young and older persons volunteers as well as cloudy opaque corneas This will allow us to determine if useful data can be obtained and if so lead to further studies in various corneal disorders caused by trauma infections and dystrophies as well as those caused by systemic or inherited disorders
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| 03-EI-0012 | None | None | None |