A New Method to Measure Ocular Surface Sensitivity: Repeatability and Reproducibility of the Liquid Jet Esthesiometer.

Objectives: To assess the reliability of the liquid jet esthesiometer (LJA) for measurement of corneal sensitivity.

Methods: Two separate studies were conducted to assess intrasession repeatability (study 1) and intersession reproducibility (study 2) of corneal sensitivity measured using the LJA. Thirty participants (13 female and 17 male participants, age 23±6 years) participated in study 1 and another 30 (18 female and 12 male participants, 35±10 years) participated in study 2.

Rapid 3D printing of unlayered, tough epoxy-alcohol resins with late gel points dual-color curing technology.

Additive manufacturing technologies and, in particular, vat photopolymerization promise complex structures that can be made in a fast and easy fashion for highly individualized products. While the technology has upheld this promise many times already, some polymers are still out of reach or at least problematic to print reliably. High-performance epoxide-based resins, which are regulated by chain transfer multifunctional alcohols, are a typical example of resins with late gel points, which require long irradiation times and high light intensities to print.

Decellularized Extracellular Matrix and Polyurethane Vascular Grafts Have Positive Effects on the Inflammatory and Pro-Thrombotic State of Aged Endothelial Cells.

In vitro assessment of small-diameter synthetic vascular grafts usually uses standard cell culture conditions with early-passage cells. However, these conduits are mainly implanted in elderly patients and are subject to complex cellular interactions influenced by age and inflammation. Understanding these factors is central to the development of vascular grafts tailored to the specific needs of patients.

Corneal hypersensitivity to cold stimuli in symptomatic computer users.

Significance: Prolonged computer use may result in repeated stimulation of the ocular surface due to ocular dryness, potentially leading to alterations in its sensitivity.

Purpose: This study aimed to evaluate the relationship between ocular symptoms and corneal sensitivity to cold and mechanical stimuli in computer users.

Methods: Fifty-two young (31 ± 6 years), frequent computer users, including symptomatic and asymptomatic users, participated in this study.