Downconversion master slave optical coherence tomography for simultaneous en-face imaging at two depths.

We report the production of two en-face optical coherence tomography (OCT) images from two different depths in real time, using three interferometers in a configuration of double downconversion master slave OCT. Two active mixers are used to produce the analog product of two photodetection signals. A low-cost digitizer with a sampling rate just at the level of twice the inverse of the tuning interval is used, with a much lower sampling rate than that required by the conventional A-scan-based OCT imaging at the same tuning rate.

828 kHz retinal imaging with an 840 nm Fourier domain mode locked laser.

This paper presents a Fourier domain mode locked (FDML) laser centered around 840 nm. It features a bidirectional sweep repetition rate of 828 kHz and a spectral bandwidth of 40 nm. An axial resolution of ∼9.

Mechanisms of epithelial thickening due to IL-1 signalling blockade and TNF-α administration differ during wound repair and regeneration.

IL-1 and TNF-α are always present during wound repair, but their pleiotropic and synergistic effects are incompletely understood. In this work, we evaluated the role of IL-1 in wound repair, and examined whether TNF-α administration impaired scarless wound repair. First, we characterised wound repair in outbred CD-1 mice according to age and sex in an ear punch wound model.

A novel hydrogel of poloxamer 407 and chitosan obtained by gamma irradiation exhibits physicochemical properties for wound management.

Application of polymers cross-linked by gamma irradiation on cutaneous wounds has resulted in the improvement of healing. Chitosan (CH) and poloxamer 407 (P407)-based hydrogels confer different advantages in wound management. To combine the properties of both compounds, a gamma-irradiated mixture of 0.