Bethesda, Maryland 20892


Purpose:

Background: - The relation between eye movement and brain function is a subject of interest to the National Eye Institute. - By comparing eye movement in healthy volunteers to research conducted on patients who have difficulty moving their eyes, the National Eye Institute hopes to develop and improve diagnostic procedures for people with eye diseases. Objectives: -The purpose of this study is to understand how we see visual patterns and how we move our eyes to see. Eligibility: - Normal volunteers: - must have no serious illnesses and must be 18 years of age or older - who are 18 years of age or older must be willing to wear contact lenses that record eye movement. - individuals with a history of eye or brain diseases, or previous eye or eye muscle surgery, are not allowed to participate in this study. Individuals who are currently using eye medications also are not eligible for the study. - Patients: - who are 18 years of age or older must be willing to wear contact lenses that record eye movement. Design: - Participants will visit the National Eye Institute outpatient clinic for examination and testing. - Participants will be screened with a medical history and eye examination (including eye pressure and eye movement tests). - Participants with healthy eyes will participate in eye movement testing experiments: - One or more sessions lasting less than three hours each. - Eye movements will be recorded with either a special contact lens or a video/infrared camera system. - For the majority of the studies done under this protocol, only one or two sessions will be required. A few studies recording very small eye movements will require three or more sessions.


Study summary:

This natural history study will investigate eye movements and other responses to visual stimuli in normal individuals (normal volunteers) and patients. This protocol replaces a similar protocol (80-EI-0093) which served the same purpose. Normal adult volunteers will be recruited and will undergo an eye exam to assure that there are no visual system problems. Volunteers will be studied in one or more sessions where eye movement, verbal or hand movement responses are recorded in response to visual stimuli. Patients with diseases affecting the oculomotor or visual systems will also be recruited to help us better understand these systems and to help characterize their specific disease.


Criteria:

- INCLUSION CRITERIA - NORMAL VOLUNTEERS: - Participant must be a volunteer with no ocular, visual, or oculomotor problems. - Participant must be 18 years old or older. - Participant must be able to follow directions and actively pay attention to visual stimuli and respond as appropriate. - For studies which use the contact lens, participant must be able to tolerate a contact lens in either one or both eyes. EXCLUSION CRITERIA - NORMAL VOLUNTEERS: - Participant has a history of ocular or visual diseases or diseases affecting the nervous system (including myasthenia, MS, etc.) or any diseases which might affect control of eye movements or affect vision. - Participant has had prior eye or eye muscle surgery. - Participant has a history of eye patching (amblyopia or lazy eye). - Participant currently uses eye drops or ocular medications. INCLUSION CRITERIA FOR PATIENTS: - Participant must be18 years old or older. - Participant must be able to follow directions and actively pay attention to visual stimuli and respond as appropriate. - For studies which use the contact lens, participant must be able to tolerate a contact lens in either one or both eyes. EXCLUSION CRITERIA FOR PATIENTS: -Patient is unable to cooperate with testing, including sitting still while eye movements are recorded.


NCT ID:

NCT00568243


Primary Contact:

Principal Investigator
Edmond J FitzGibbon, M.D.
National Eye Institute (NEI)

Edmond J FitzGibbon, M.D.
Phone: (301) 496-7144
Email: ejf@mail.nih.gov


Backup Contact:

N/A


Location Contact:

Bethesda, Maryland 20892
United States

For more information at the NIH Clinical Center contact Patient Recruitment and Public Liaison Office (PRPL)
Phone: 800-411-1222
Email: prpl@mail.cc.nih.gov

Site Status: Recruiting


Data Source: ClinicalTrials.gov

Date Processed: August 17, 2017

Modifications to this listing: Only selected fields are shown, please use the link below to view all information about this clinical trial.


Click to view Full Listing

This study is not currently recruiting Study Participants on ClinicalConnection.com. The form below is not enabled.