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Author: Murphy JC, Osterberg RE, Seabaugh VM, Bierbower GW
Journal: Toxicology 1982;23(4):281-91
Abstract: Acids and alkalis were instilled into the eyes of 2 groups of rabbits; the eyes of one group were washed with tap water 30 s after exposure. Damage seen in washed and unwashed eyes was not always related to pH. Some strong acids with greater acidity than pH 2.5 produced opacities while 0.3% hydrochloric acid with a pH of 1.28 produced no ocular damage. Phenol (5%) and acetic acid (5%) with pHs greater than 2.5 produced damage equivalent to or greater than that produced by equal concentrations (w/v) of the mineral acids. All alkalis with pHs ranging from 11.5 to 13.5 produced opacities and other ocular damage of different degrees depending upon the alkali and its concentration. For example, low concentrations of some alkalis in the pH range from 11.3 to 12.8 produced no ocular changes. The duration of the corneal opacities produced by phenol, 1% sodium hydroxide, acetic acid and anhydrous sodium carbonate and the onset of corneal opacity produced by 5% sulfuric acid, the weak acids and 1% sodium hydroxide were reduced as a result of washing the test eyes 30 s after instillation of the test material. These data suggest that acidity and alkalinity of the test material are not the only factors to be considered in relation to a substances’ capacity to produce severe ocular injury. The concentration of the test chemical and its period of contact with the eye prior to washing are also important.
Three Army soldiers were on their way to us following an explosion of an improvised device. The driver had goggles on and suffered extensive facial trauma and all three had eye injuries from the debris that hit them. We got bilateral Morgan Lenses in all three and flushed each with several liters of LR. Followed with antibiotics, they were rebandaged and on an emergency air evacuation that evening. These men were grateful for the care they received. The technicians and physicians here are thankful that everyone knew what to do to get the lens system set up and running. I am grateful to you for the opportunity to access the class online and ability to present it shortly after we arrived. One of the others did have a corneal laceration that we could assess after flushing. We feel confident that all will have the best outcomes thanks to the Morgan Lens use.
We also had a patient who experienced an electrical explosion (a generator) to his face. We used Morgan Lenses to irrigate his eyes and sent him on an air evacuation flight to Germany. He has since returned to duty and is doing well with minimal residual sight loss.Military Registered Nurse (Active Duty)
The Morgan Lens is used in 90% of hospital emergency departments in the USA and can be inserted in less than 20 seconds. There simply is no other "hands-free" method of eye irrigation. Nothing else frees medical personnel to treat other injuries or to transport the patient while irrigation is underway. Nothing is more effective at treating ocular chemical, thermal, and actinic burns or removing non-embedded foreign bodies, even when the patient's eyes are closed tightly. Its design makes it simple and straightforward to use so minimal training is required.