Cornea

Interstitial Keratitis, or its abbreviation “IK” for many ophthalmologists, is an inflammation of the cornea. “Keratitis” is the term for inflammation of the cornea, while “interstitial” refers to the area between cells. In this case, it refers to the stroma—the area between the epithelium and endothelium of the cornea. Other names include “nonulcerative keratitis”, which describes the inflammation as not breaking through the epithelial layer of the cornea via sores, “syphilitic keratitis,” termed because syphilis is the most common cause of interstitial keratitis, and “immune stromal keratitis”, since often the inflammation is caused by an immune system response. Interstitial keratitis is caused by either an active infection or by a reaction…

Corneal abrasions One of the most common eye injury occurring while playing sport is the scratch of the cornea or corneal abrasion in medical term.This injury consist of the scratching of the cornea by the finger or the fingernail of a player.An abrasion can be small or large depending of the gravity of the scratching.This type of injury ensues when the corneal epithelium is abraded and it is more common in basketball (Brummit & Ericksson p.150) where the players in general without face…

Double RPE tears developed after intravitreal injection of anti-VEGF agents in 10 out of 11 eyes, and spontaneously (first tear developing without any previous treatment) in 1 eye. BCVA and CMT did not show significant change after the occurrence of RPE tears. In most cases, tears graded according to Sarraf et al. (12) remained stable over time. Gutfleish et al. (13) studied 37 RPE tears and found that BCVA deteriorated after RPE tear and during follow-up significantly, with 53.2% of eyes…

evidence based practice in ruling in/out different conditions, and search for a diagnosis that explain the patient’s symptoms (Bowen, 2006; Canadian Nurses’ Association [CNA], 2010). In addition, the examiner considered current research and evidence in exploring further investigations in substantiating the diagnosis. In trying to establish a differential diagnosis for eye problem, practitioners should consider whether the pain is related to trauma or injury early in the assessment (Dains,…

The Effects of My Corneal Ulcer I was a contact wearer and I wore contacts for about four to five months until something execrable occurred. I thought it was just a common pink eye but, later found out that I had contacted a corneal ulcer which I knew would probably change my life forever. The use of contact lenses resulted in a corneal ulcer that contributed to the loss of my eyesight. I have regained my eyesight but I still have trouble seeing. If I didn’t go to the…

The first structure is known as the cornea is a clear membrane that covers the front of the entire eye. The cornea plays a major role of keeping objects in focus for the eye to take in. The second structure is known as the lens which is a transparent membrane that is Simi-flexible which focuses the image onto the retinal layer. Both of these structures play a role on bending light that falls on the surface of the eye to focus it to the back of the eye. There is a structure at the back of the eye…

of interest is 600 cm away (do), the focal length would need to be adjusted to 2.19 cm for the image to be seen. This is shown in the following calculation: f=(1/d_o +1/d_i )^(-1) f=(1/600+1/2.2)^(-1) f=2.19 In this scenario, the ciliary muscle is able to contract or relax enough so that the curvature of the lens is just right for the object to be clearly visible to the individual. For some people, however, this does not work as well. Sometimes the image is projected further than the retina or…

Have you ever dealt with dry, itchy eyes? They may sting, or feel gritty or overly sensitive. This is a common condition that affects as many as one in three people. Also known as keratitis sicca or xerophthalmia, dry eyes can result when tear fluid is produced too slowly or evaporates too quickly. While it’s common to ease discomfort in the obvious way — by adding more fluid to the eyes in the form of eye drops — it’s important to investigate what’s behind this seemingly simple, yet…

During cataract surgery, a small incision is made to your eye in order remove the cloudy lens and clean it out or replace it with a new news. As a result, this small incision leads to inflammation around the eye area after surgery. A few signs may include swelling and redness. While the inflammation should go away a few days after your surgery is complete it can be uncomfortable to deal with. Luckily, there are a few tips you can use in order to reduce the inflammation around your eyes until it…

Procedure of LASIK: First, the eye is numbed with a few drops of topical anesthetic. An eyelid holder is placed between the eyelids to keep them open and prevent the patient from blinking. A suction ring placed on the eye lifts and flattens the cornea and helps keep the eye from moving. Once the cornea is flattened, a hinged flap of corneal tissue is created using an automated microsurgical device, either a laser or blade. This corneal flap is lifted and folded back (figure 1). Then the excimer…