Comparison of modern high-speed vitrectomy systems and the advantages of using dual-bladed probes.

Purpose: This study analyzes the efficiency of different vitrectomy systems and compares single with double-bladed cutters.

Methods: The systems EVA™ (DORC), Constellation Vision System (ALCON), megaTRON S4 (Geuder) and Stellaris PC (Bausch and Lomb) were used. We chose 20G and 23G probes, since not all systems had switched to a smaller G at the time the study was conducted in 2016.

A promising approach in laser vitrectomy executed by plasma-mediated removal of vitreous body via a diode-pumped Q-switched Nd:YAG laser.

To examine the applicability of plasma-mediated vitreous body removal, a diode-pumped Q-switched Neodymium:YAG laser was used for a possible application in eye surgery/vitrectomy. On a total of 1500 porcine vitreous bodies, removal rates were evaluated by comparing different LaserVit-tip designs (Mark I/II Gauge 19 and Mark III Gauge 22). The Nd:YAG laser, operating at a wavelength of 1064 nm and a pulse duration of 4 ns, was utilized for vitreous body removal with respective settings of 2, 3 and 4 mJ and pulse repetition rates (cut rates) from 5 to 25 Hz (300-1500 /min) in 5 Hz-steps as well as for 100 Hz (6000 cuts/min).

High-Frequency Application of Cationic Agents Containing Lubricant Eye Drops Causes Cumulative Corneal Toxicity in an Eye Irritation Test Model.

High-frequency applied cetalkonium chloride (CAC) and benzalkonium chloride (BAC) 0.02% did not hamper corneal healing in a living rabbit model of induced corneal erosion. In contrast, the eye irritation test (EVEIT) shows inhibition of healing for these substances.

Detection of Coronavirus in Tear Samples of Hospitalized Patients With Confirmed SARS-CoV-2 From Oropharyngeal Swabs.

Purpose: This study was designed to detect CoV-RNA in the tears of polymerase chain reaction (PCR)-confirmed SARS-CoV-2 positive patients.

Methods: We performed a prospective case series study of hospitalized patients who have been confirmed SARS-CoV-2 positive by oropharyngeal swab within the previous 5 days. Tear samples obtained with a laboratory capillary and oropharyngeal swabs were analyzed by real-time PCR using the Altona SARS-CoV-2 Assay or the Roche SARS-CoV-2 LightMix PCR, depending on the availability.

First aid therapy for corrosive chemical eye burns: results of a 30-year longitudinal study with two different decontamination concepts.

Purpose: There is currently uncertainty about the most efficacious decontamination solution for corrosive chemical eye burns. This 30-year longitudinal study evaluated the relative efficacy of two different decontamination methods. Passive decontamination consists of rinsing with tap water, 0.