An Infrared Sensor for Monitoring Meibomian Gland Dysfunction

Abstract

Meibomian gland dysfunction is one of the most common eye disorders observed in clinical practice. It applies to almost 50% of the population, especially people using contact lenses. It is believed that meibomian gland dysfunction is the most common cause of abnormal stability and integrity of the tear lm. Despite this, there is no commercially available equipment for the diagnosis. The article proposes the construction of an optical sensor and a computer system for the rapid, non-invasive diagnosis of meibomian gland dysfunction. The designed hardware and software as well as preliminary results of clinical research are also described.

Studying the influence of object size on the range of distance measurement in the new Depth From Defocus method

“…The camera was equipped with a tripod, a lens with a brightness of F = 2.0 with a fixed focus of f = 16 mm, visible light filter (high-pass filter, λ ≥ 850nm), infrared illuminator with the wavelength λ = 850 nm and a illuminator driver. The operation of the controller and the IR lamp together are discussed in [19] - [21]. The experiment was performed in the configuration shown in Fig.…”

New Vision Sensor to Measure and Monitor Gas Pressure

“…The active element in the made video-manometer was a white silicone at diaphragm with a thickness of 0.5 mm, LED diodes with a wavelength of λ = 850 nm, where the I F current was stabilized using the technique given in [18,19]. Fig.…”

Method of Measuring the Distance to an Object Based on One Shot Obtained from a Motionless Camera with a Fixed-Focus Lens

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