Measurement of the Oxygen Saturation in the Retinal Vessels With Oxymap

Kagawa University

Status: Unknown

Conditions: Chorioretinal Disorders in Diseases Classified Elsewhere

Treatments: Device: oximetry

Study type: Observational

Funder types: Other

Identifiers

NCT02318641

H26-046

Details and patient eligibility

About

Retinal oximetry can be measured with newly developed Oxymap (Oxymap ehf, Reykjavik, Iceland). Briefly, the device simultaneously acquires digital images at two wavelengths and automatically tracks retinal vessels on both images. Retinal vessel oxygen saturation is estimated by spectrophotometric analysis of light reflected from retinal vessels and from the immediately surrounding retina. Oxygen saturation measurements are made on major temporal arteries and veins. Briefly, the first and second degree vessels are used, with the addition of third degree vessels in images where peripapillary haemorrhage prevented analysis close to the optic disc. Vessel segments chosen for analysis are used consistently for consecutive measurements in the same retina.

Full description

Retinal oximetry can be measured with newly developed Oxymap (Oxymap ehf, Reykjavik, Iceland). Briefly, the device simultaneously acquires digital images at two wavelengths and automatically tracks retinal vessels on both images. Retinal vessel oxygen saturation is estimated by spectrophotometric analysis of light reflected from retinal vessels and from the immediately surrounding retina. Oxygen saturation measurements are made on major temporal arteries and veins. Briefly, the first and second degree vessels are used, with the addition of third degree vessels in images where peripapillary haemorrhage prevented analysis close to the optic disc. Vessel segments chosen for analysis are used consistently for consecutive measurements in the same retina.

Retinal oximetry in various chorioretinal diseases will be measured with Oxymap.

Enrollment: 300 estimated patients

Sex: All

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Healthy eyes and eyes with various chorioretinal diseases, including diabetic retinopathy, retinal vein occlusion, epiretinal membrane, macular hole, inherited chorioretinal diseases, glaucoma, retinal detachment, etc.

Exclusion criteria

• Eye with medial opacity.