Showing posts with label Ophthalmology. Show all posts
Showing posts with label Ophthalmology. Show all posts

Sunday, February 7, 2016

Ocular Emergency: Chemical Burns, A Non-Ophthalmologist Approach to Initial Treatment and Referral

Image from Maxxl2 - Wikimedia Commons

This post was peer reviewed.
Click to learn more.
Author: 
Fernando Pellerano, MS-V Universidad Iberoamericana (UNIBE) School of Medicine


Chemical burns represent potentially blinding ocular injuries and constitute a true ocular emergency requiring immediate assessment and initiation of treatment. The sequelae of an ocular burn can be severe and particularly challenging to manage. An appropriate initial emergency management may be the most important factor in determining visual outcome.[1]

Chemical eye injuries can occur from any exogenous material contacting the eye. This includes alkalis (e.g., lye, cements, plasters, airbag powder, bleach, and ammonia), acids (e.g., battery acid, pool cleaner, and vinegar), solvents, detergents, and irritants (e.g., mace).[2] Severity of the eye injury depends on the pH, concentration, and the nature of the chemical.

Sunday, December 13, 2015

Retinal Detachment: What You Need to Know

Image Credit: Subhadra Jalal - Flickr
Author: Stephanie Cihlar, MSIII
Medical Student
Loyola University Chicago Stritch School of Medicine
AAEM/RSA Publications Committee Member

This post was peer reviewed.
Click to learn more.
Introduction
Retinal detachment is one of the most common ophthalmic emergencies, affecting approximately 1 in 10,000 people per year.[1] Because of the risk of permanent vision loss, it is important that emergency physicians are able to identify a retinal detachment and consult a retinal specialist as soon as possible.

Pathophysiology
Retinal photoreceptors (rod and cones) are metabolically highly active cells. In fact, the choroidal circulation responsible for nourishing these cells has the highest blood flow per cubic centimeter of tissue found in the human body.[2] In a retinal detachment, the neurosensory layer of the retina is peeled away from its underlying supporting tissues, the retinal pigment epithelium and choroid. The photoreceptors undergo ischemic damage, which can lead to vision loss and blindness in a matter of hours.[3]