Eye Movements and Reading Disabilities

NCT ID: NCT01860027

Last Updated: 2023-11-22

Basic Information

• Recruitment Status: TERMINATED
• Total Enrollment: 1 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2013-12-31
• Study Completion Date: 2014-09-01

Brief Summary

The mechanism of the eye movement anomalies seen in dyslexic patients is not well defined. Some optometrists use observational eye movement tests as screening devices for dyslexia and advocate eye movement therapy as a treatment option for dyslexia. The reliability of the clinical eye movement tests and the efficacy of the eye movement therapies have not been determined.

Saccades are the fast eye movements that move our eyes from one word to the next when we read. The eye movement recordings from patients diagnosed with reading disorders, extra ocular muscle imbalances and control patients (no learning disability or eye movement disorder) will be analyzed and compared. The sensitivity and specificity of detecting reading disorders will be determined for the Visagraph III and the Readalyzer. Although these clinical tests are frequently used to diagnose saccadic inaccuracies and diagnose dyslexia in school aged children, the validity of these clinical screening tests has not been determined.

Conditions

Reading Disability; Dyslexia

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

Children with reading disabilities

Children diagnosed with reading disabilities (age 7 to 13).

No interventions assigned to this group

Children with eye movement disorders

Children diagnosed with eye movement disorders (age 7 to 13).

No interventions assigned to this group

Control Group

Children with normal reading ability and normal eye movements (age 7 to 13.

No interventions assigned to this group

Eligibility Criteria

Inclusion Criteria

• 1. Age 7 to 13 (Must be in at least 2nd grade, but not higher than 8th grade) 2. Complete ophthalmic examination performed by a pediatric ophthalmologist and orthoptist.

3. All ocular structures must be within normal limits. 4. Best corrected visual acuity must be equal to or better than 20/30 in each eye.

5. Group 1:

1. Children with a reading disability must be given the diagnosis by a clinical educational specialist, educational psychologist or neuro-behavioral psychologist.

2. Children with a reading disability may not have any ophthalmic anomaly determined by testing as described above. This includes but is not limited to amblyopia, strabismus, nystagmus, or any organic disease.

6. Group 2

a. Eye movement disorder confirmed by testing by a pediatric ophthalmologist and/or orthoptist b. All other ocular structures must be within normal limits (including visual acuity).

7. Group 3:

1. No evidence of reading disability, attention deficit disorder or ocular anomaly, including eye muscle or movement disorder as specified above.

Exclusion Criteria

• 1. Myopia more than - 6.00 diopters (spherical equivalent) in either eye. 2. Hyperopia more than + 6.00 diopters (spherical equivalent) in either eye. 3. History of vision therapy or orthoptic treatment 4. Any ocular anomaly with the exception of eye movement disorder for group 2.

• Minimum Eligible Age: 7 Years
• Maximum Eligible Age: 13 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Scripps Health

OTHER

Sponsor Role: lead

Responsible Party

Shelly Meese

Project Manager

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Gregory Ostrow, MD

Role: PRINCIPAL_INVESTIGATOR

Scripps Clinic

Laura Kirkeby, Orthoptics

Role: STUDY_DIRECTOR

Scripps Clinic

Locations

Scripps Clinic

San Diego, California, United States

Countries

United States

Other Identifiers

EOMRD

Identifier Type: -

Identifier Source: org_study_id