Dynamic Light Scattering and Keratoscopy for Corneal Examination
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.
|Official Title:||A Pilot Study Using the Dynamic Light Scattering Device (DLS) Combined With Keratoscopy on the Cornea in Vivo|
|Study Start Date:||December 2002|
|Estimated Study Completion Date:||September 2005|
Please refer to this study by its ClinicalTrials.gov identifier: NCT00050466
|United States, Maryland|
|National Eye Institute (NEI)|
|Bethesda, Maryland, United States, 20892|