title: Highly reproducible swept-source, dispersion-encoded full-range biometry and imaging of the mouse eye.
abstract: We report a high-speed, dispersion-encoded, full-range (DEFR) swept-source optical coherence tomography system for in vivo ocular imaging and biometry of small animals. The fast DEFR algorithm removes the depth ambiguity, gives access to objects located at the zero delay position, and doubles the sampling depth to 2x5.0 mm (at -101 to -71 dB sensitivity) in a single scan using 2048 samples/depth scan 0.43 nm line width of a light source operating at 1056 nm with 70 nm tuning range. The acquisition speed (frames of 512 depth scans in 18.3 ms) permits precise on-line monitoring during positioning and provides cross-sectional views of the mouse eye. Preliminary studies demonstrate high-throughput, reproducible assessment of multiple biometric features (e.g., day-to-day reproducibility of axial length measurement +/-5.3 microm) that is insensitive to eye motion sufficient for long-term monitoring.
authors.affiliation: Cardiff University, School of Optometry and Vision Sciences, Wales, United Kingdom.
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
authors.forename: Bernd
authors.initials: B
authors.lastname: Hofer
authors.forename: Yen-Po
authors.initials: YP
authors.lastname: Chen
authors.forename: Jeremy A
authors.initials: JA
authors.lastname: Guggenheim
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Drexler
authors.forename: Boris
authors.initials: B
authors.lastname: Povazay
mesh_terms: D000818:Animals; D001699:Biometry / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005123:Eye / Q000033:anatomy & histology*; D008029:Lighting / Q000295:instrumentation; D051379:Mice; D019721:Ophthalmoscopes / Q000662:veterinary*; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000662:veterinary*