healthy subjects, primary angle-closure suspect, primary angle-closure and primary angle-closure glaucoma
Conditions
Interventions
None listed
Sponsors
The Chinese University of Hong Kong
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Japanese healthy subjects and/or patients with primary angle closure glaucoma (PACG) 1. over 40 years 2. eyes not performing cataract surgery 3. maximum visual acuity more than 0.5 4. spherical equivalent (refraction) more than -1.0 diopters Normal eyes always show normal intraocular pressure (from 10 to 21 mmHg), have an open angle, and have no glaucomatous optic neuropathy Glaucoma is an eye with characteristic morphological changes of the optic disc or retinal nerve fiber and corresponding visual field defects PACG is classified as follows according to angular examination and intraocular pressure .primary angle closure suspect(PACS) .primary angle closure (PAC) .primary angle closure glaucoma (PACG)
Exclusion criteria
Exclusion criteria: Those who do not meet inclusion criteria from 1 to 4 Secondary glaucoma, eyes after intraocular surgery including laser treatment, eyes with strong cataract, those who can not conduct reliable examination
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The scan protocols comprise (1) custom 'Lens biometry' which includes 18 radial B-scans (800 A-scans/B-scan), each with 16 mm in length and 14 mm in depth and (2) 'Anterior segment' which includes 16 radial B-scans (800 A-scans/B-scan), each with 16 mm in length and 11 mm in depth. Eyes will be imaged in the dark (<1.0 lux) for three times with custom 'Lens Biometry' and once with 'Anterior segment'; and then in room light (needs to standardize the room light illumination) for three times with custom 'Lens Biometry' and once with 'Anterior segment'. | — |
Countries
Japan,Asia(except Japan),North America
Contacts
Public ContactRei Sakata
The University of Tokyo hospital Department of ophthalmology
Outcome results
None listed