P.O. Box 8719
Missoula, MT 59807
329 East Pine St
Missoula, MT 59802
Monday - Friday
8:00 AM - 4:00 PM MT
Skip to the content
Author: Brady MD; Hustead RR; RobinsonRH; Becker KE Jr, Department of Anesthesiology, University of Kansas School of Medicine-Wichita 67214
Publication: Reg Anesth 1994 May-Jun;19(3):196-8
BACKGROUND AND OBJECTIVES: Proparacine (P), 0.5%, is often applied topically to the eye to diminish the pain of injection of anesthetic for eye surgery; however, application of 0.5% P itself can cause some degree of discomfort. This study evaluated the use of balanced salt solution to dilute P before instillation in the eye to prevent discomfort.
METHODS: In a double-blinded manner, 42 consenting adults about to undergo cataract surgery were given 0.5% P in one eye and 0.03% P in the other eye. One minute later the same solutions were instilled into each eye. Ten minutes later, 0.5% P was instilled into both eyes. After each instillation the patients were asked to describe the pain in each eye on a 0 to 10 scale.
RESULTS: Those receiving 0.5% as the first drop had a mean score of 1.28, which was greater than the score of 0.09 for the 0.03% P group (P<.01). No one reported pain after the second drop was applied 1 minute later. After receiving 0.5% P 10 minutes later, the group that received 0.5% P reported a mean pain score of 0.09 while those who had received 0.03% P reported a score of 0.76, which was significantly greater than that reported by the 0.5% P group after the 10 minute instillation (P<.01) but significantly lower than the score reported after the first instillation of 0.5% P (P<.05). CONCLUSIONS: Dilution of P in balanced salt solution to a concentration of 0.03% produces a solution that is significantly less painful than 0.5% P and reduces the discomfort of the instillation of 0.5% P.
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.