Capability of glaucoma detection by ophthalmology residents using High-Dynamic-Range (HDR) concept versus conventional disc photography

Not Applicable

Completed

• Conditions: Interpersonal variation; - Optic disc photography; Glaucoma; Retinal nerve fiber layer defect

• Registration Number: TCTR20141013002
• Lead Sponsor: Faculty of Medicine

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2014-10-13
• Study Completion: 2014-10-20
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

glaucoma group
Age > 18 years
Diagnosis by glaucoma specialist
glaucomatous eyes with the following
- Glaucomatous cupping at least 0.7 of CDR
- Nerve fiber layer defect in OCT or disc photography
- Visual field defect correlated to disc photography or OCT

Glaucoma suspected
Age > 18 years with following criteria
- Glaucomatous cupping at least 0.7 of CDR
- No glaucomatous visual field defect

Normal
Age > 18 years with no glaucomatous optic nueropathy or glaucomatous visual field defect

Ophthalmology residents
10 First year residents at King Chulalongkorn Memorial Hospital

Exclusion Criteria

glaucoma, glaucoma suspected and normal eyes
Retinal or neurological eye disease
History of intraocular trauma
Uncooperative in examination
Contraindicate for pupil dilatation
Blurred disc photography
Poor quality OCT: at least 7 signal strength, center optic nerve
Unreliable VF perimetry: false positive errors >33%, false negative errors > 33% and fixation loss >20%

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Rate of glaucoma detection Within 30 seconds after looking at each photograph Clinical judgement

Secondary Outcome Measures

Name	Time	Method
Percentage, mean, sensitivity, specificity, PPV, NPV Within 30 seconds after looking at each photograph Clinical judgement