Scratched Cornea Symptoms

Cornea is the transparent, dome like portion of the eye, which covers the iris, pupil and anterior chamber. The cornea of an adult will measure about 0.5 millimeters thick. The cornea appears transparent due to the absence of blood vessels. Its transparent nature helps attain maximum vision clarity by pumping water from the endothelium layer and supplying oxygen from the tears. However, this transparent window features the presence of scores of nerve endings, which is why this part is extremely sensitive. The cornea is a powerful refracting medium, thereby maximizing the focusing power of the eyes. When this clear, transparent part of the eye gets scraped or scratched, the condition is termed as corneal abrasion or scratched cornea. Let us try and understand the different scratched cornea causes and scratched cornea symptoms.

Scratched Cornea Causes

Abrasions on the cornea occur when some foreign particles hit the eye. The different corneal abrasion causes are:

• When a piece of wood or sand gets lodged under the upper eyelid of the eye, causing scratches on corneal surface every time the person blinks.
• Corneal abrasion can take place when hot cigarette ash goes flying into the eye.
• Extensive rubbing of the eyes due to irritation in the eyes can also lead to scratched cornea.
• Wearing contact lenses for more time than recommended can conduce corneal abrasions.
• Materials such as paint chips, which enter the eye while scraping old paint off the wall or dried leaf debris blowing into the eye by the wind can scratch the cornea.
• Besides the above tiny particles of paint chips and leaf, high speed particles such as tiny metal fragments can also fly into the eye of those using grinding wheels without wearing protective gear. This is a serious condition and needs immediate medical attention, as it can result in permanent loss of vision. Read more on eye care.
• Eyes left unprotected during exposure to ultraviolet light from welding arcs or sun lamps can conduce changes in the surface of the cornea, which bear semblance to corneal abrasions.
• Scratches on the cornea can also occur when poked accidentally by children in the eye.

Scratched Cornea Symptoms

One should suspect scratched cornea if one has encountered an injury in the eye. Pain is a very common symptom, however, scratched cornea pain can be intense. Another symptom is the sensation of a foreign body in the eye, which makes one feel there is something in the eye that cannot get out. This symptom of scratched cornea may emerge immediately after the injury or after a few hours. The other symptoms of scratched cornea that lead to eye problems are:

• Constant tearing of the eyes
• Sensitivity to visible light
• Eye pain when exposed to bright light
• Swelling in the eye, known as corneal edema
• Increased reflexive eye blinking
• Redness of the eyeball
• Squinting due to the spasm of muscles surrounding the eye
• Blurred vision, which can lead to loss of vision

When one experiences any of these scratched cornea symptoms, one should consult an ophthalmologist within the next 24 hours. One should not neglect these symptoms of scratched cornea. Blurred vision may result in loss of vision, which is why it is important to seek medical attention as soon as possible. Moreover, until you receive medical attention, avoid any kind of visual activity. Avoid using lenses until the scratched cornea symptoms clear off and the ophthalmologist gives a thumbs up. Scratched cornea treatment is fairly simple and with the right treatment this condition can be healed within a span of 2-4 days. Some of the common treatments used to treat scratched cornea are antibacterial eye-drops and medications to expand the pupil and use of a medicated eye-patch to protect the cornea temporarily.