JRCT ID: jRCT1032200262
Registered date:23/12/2020
Establishment of an Objective and Quantitative Design System for Shading Glasses
Basic Information
Recruitment status | Recruiting |
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Health condition(s) or Problem(s) studied | Retinitis pigmentosa |
Date of first enrollment | 23/12/2020 |
Target sample size | 10 |
Countries of recruitment | |
Study type | Interventional |
Intervention(s) | measure the contrast sensitivity by Pelli-Robson chart for the subjects wearing the colored filter lenses selected based on the basic theory |
Outcome(s)
Primary Outcome | contrast sensitivity measured using Pelli-Robson chart |
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Secondary Outcome | 1) logMAR visual acuity 2) Ellipsoid zone length 3) Mean retinal sensitivity of central 4 points and mean deviation value of Humphrey visual field analyzer 10-2 program 4) Contrast visual acuity 5) 17-item Utah Photophobia Symptom Impact Scale(UPSIS-17) |
Key inclusion & exclusion criteria
Age minimum | >= 20age old |
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Age maximum | <= 80age old |
Gender | Both |
Include criteria | 1) patients with retinitis pigmentosa, 20 years of age or more and under 80 years of age at the time of obtaining informed concent 2) patients with decimal visual acuity of 0.1 or more 3) patients who have used colored filter lenses to reduce photophobia |
Exclude criteria | 1) patiens with complications as follows: macular disease with vitreous macular traction syndrome/macular edema/epiretinal membrane/severe myopia with macular legions, diabetic retinopathy, inflamation of external eye/infection/severe dry eye, occlusion of retinal artery, posterior ischemic optic neuropathy, history of optic nerve disease, nuclear cataract (Grade 3 or higher by Emery clasification), pre-subcapsular cataract or posterior subcapsular cataract seriously affecting the vision 2) patients who the Principal Investigator or the investigating doctors judging inappropriate for participation in this trial |
Related Information
Primary Sponsor | Miura Gen |
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Secondary Sponsor | |
Source(s) of Monetary Support | Mitsui Chemicals, Inc. |
Secondary ID(s) |
Contact
Public contact | |
Name | Gen Miura |
Address | 1-8-1 Inohana Chuo-ku Chiba-shi Chiba Japan Chiba Japan 260-8677 |
Telephone | +81-43-222-7171 |
gmiura2@chiba-u.jp | |
Affiliation | Chiba university hospital |
Scientific contact | |
Name | Gen Miura |
Address | 1-8-1 Inohana Chuo-ku Chiba-shi Chiba Japan Chiba Japan 260-8677 |
Telephone | +81-43-222-7171 |
gmiura2@chiba-u.jp | |
Affiliation | Chiba university hospital |