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Validation of laser Doppler interferometric measurementsin vivoof axial eye length and thickness of fundus layers in chicks
- Source :
- Current Eye Research. 15:691-696
- Publication Year :
- 1996
- Publisher :
- Informa UK Limited, 1996.
-
Abstract
- Purpose. Laser Doppler interferometry (LDI) permits the measurement of intraocular distances to a precision of better than 20 microm. The signal complex from the posterior segment of the eye consists of four peaks in the chick, an animal frequently used in ocular development studies. The present study sought to identify anatomical landmarks corresponding to these LDI peaks. Methods. Distances obtained with LDI at the posterior pole were compared to axial length components measured with three independent methods: vernier calipers, tissue sections and high frequency A-scan ultrasound. Results. LDI reflections appear to originate from the retinal inner limiting membrane, Bruch's membrane and the inner and outer scleral surfaces. Conclusions. The non-invasive and highly precise nature of LDI measurements enables repetitive and accurate assessment of intraocular distances. Such measurements should prove particularly useful for the assessment of short-term cyclic variations in intraocular distances as well as post-natal eye growth.
- Subjects :
- Materials science
genetic structures
Posterior pole
Fundus (eye)
Eye
Signal
Retina
Cellular and Molecular Neuroscience
Optics
medicine
Animals
Ultrasonography
business.industry
Reproducibility of Results
Inner limiting membrane
Laser Doppler velocimetry
eye diseases
Sensory Systems
Posterior segment of eyeball
Ophthalmology
Interferometry
medicine.anatomical_structure
Calipers
sense organs
business
Chickens
Subjects
Details
- ISSN :
- 14602202 and 02713683
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Current Eye Research
- Accession number :
- edsair.doi.dedup.....9f62f356e27eab965f31a41c12e70740