A study of the relationship between reading speed and head movement in normal subjects and patients with retinitis pigmentosa

JRCT ID: jRCT1030240018

Registered date:08/04/2024

Basic Information

• Recruitment status: Recruiting
• Health condition(s) or Problem(s) studied: Healthy subjects, Retinal pigmentosa
• Date of first enrollment: 13/04/2024
• Target sample size: 30
• Study type: Interventional
• Intervention(s): Controlled and uncontrolled head movement and reading speed measurements

Outcome(s)

Primary Outcome

1) Comparison of reading speed between control and simulation groups under uncontrolled head movement
2) Comparison of reading speed of control and simulation groups under head movement control
3) Comparison of reading speed of control group with and without head movement control
4) Comparison of reading speed of simulation group with and without head movement control
5) Comparison of reading speed of control and RP groups under uncontrolled head movement
(6) Comparison of reading speed of control and RP groups under head movement control
(7) Comparison of reading speed of control group with and without head movement control
(8) Comparison of reading speed of RP group with and without head movement control

Secondary Outcome

1) Relationship between head movement and reading speed of the control group under uncontrolled head movement
2) Relationship between head movement and reading speed of the simulation group under uncontrolled head movement
3) Relationship between head movement and reading speed of the control group under uncontrolled head movement
4) Relationship between head motion and reading speed of the RP group under uncontrolled head motion

Key inclusion & exclusion criteria

• Age minimum: >= 20age old
• Age maximum: < 50age old
• Gender: Both

Include criteria

1) Patients already diagnosed with retinitis pigmentosa, with good visual acuity and less than 10 degrees of afferent visual field constriction
2) Healthy subjects without organic diseases

Exclude criteria

Normal subjects
(1) Patients with organic diseases of the eye other than refractive error
(2) Those with severe refractive error including astigmatism
(3) Patients with disorders that interfere with head movement
Retinitis pigmentosa
(1) Patients with organic eye diseases that affect visual acuity
(2) Patients with severe refractive error including astigmatism
(3) Patients with disorders that interfere with head movement
(4) Those with abnormalities of eye movement including abnormalities of binocular and vestibular functions
(5) Those with a disability that makes it difficult to read Japanese documents

Related Information

• Primary Sponsor: Niida Takahiro