General

Keratoconjunctivitis Sicca

Keratoconjunctivitis Sicca is commonly known as dry eye syndrome, and refers to a disorder that causes dryness of the conjunctiva and cornea.

The accepted medical understanding of Keratoconjunctivitis Sicca (KCS) has changed from the belief that KCS is due to a state of aqueous tear insufficiency, which means that the tear gland isn’t producing enough hydration to keep the entire conjunctiva and cornea covered.

The current medical stance on KCS attributes the problem to several factors combined, and the accepted cause is a combination of nerve cell (or nerve tissue) nutrient deficiencies, inflammation of the ocular surface, and Meibomian gland dysfunction.

Keratoconjunctivitis Sicca Symptoms

Dry eye symptoms associated with KCS include a pulling sensation, pressure behind the eyes, irritation and or ocular burning sensations, stinging, photophobia, itching, blurred vision, or a constant feeling that something is in your eye.

The symptoms of KCS can […]

Bacterial Keratitis Causes and Symptoms

Bacterial keratitis is a serious infection of the cornea and is often referred to as a ‘corneal ulcer’.  Symptoms include reduced vision, light sensitivity, pain and excessive tearing or discharge from your eye.  It is typically caused by contact lens use (especially, overnight wear and inadequate lens disinfection), but may be also be caused by:

Using contaminated eye medicine or other solutions in the eye
Recent corneal disease
Reduced immunity due to diabetes, poor nutrition, or alcoholism
Trauma or injury of the eye
Use of topical steroids

The types of bacteria responsible for a keratitis infection:

Staphylococcus Aureus (contact lens wearers)
Pseudomonas Aeruginosa

Bacterial keratitis can involve the uppermost layers of the cornea “superficial bacterial keratitis” or, affect deeper corneal layers “deep bacterial keratitis”.  When superficial keratitis heals, there is usually no scar left on the cornea.

In severe cases of deep bacterial keratitis where the center of the […]

Healthy Eating for Healthier Eyes

What you put into your body effects the health of everything from the top of your head down to the tips of your toes.  Many times we overlook (no pun intended) the effects of nutrition and what role healthy eating habits play when it comes to issues related to our eyes and vision.  Our eyes are vascular; meaning they are composed of vessels and ducts that convey fluids like blood.  Most foods that are good for your heart, are also good for your eyes.  Foods low in trans and saturated fats play an important role in keeping the blood vessels of your eyes healthy and lessen the chances of developing serious eye diseases – especially diseases like cataracts and age-related macular degeneration.  Some foods that have been linked to healthier eyes and their benefits:

Lutein & Zeaxanthin: eggs, broccoli, lettuce […]

You Are What You Eat — Can the Foods You Eat Improve Your Eyesight?

Since you were little, your Mom told you to eat your carrots. “They’ll help you see better,” she said.
Is this true? Can you get Superman’s x-ray vision simply by eating enough carrots to make you feel like a character from Watership Down? Although not directly correlated to improved vision chart success, the overall answer is that you should listen to your Mother. The right foods do help protect the health of your eyes.
Unlike foods that can instantly give you more energy or help build muscle tone and the like, foods that benefit your eyes serve a protective function, keeping them healthier and helping them ward off vision problems. Nutrients such as omega-3 fatty acids; lutein; zinc; and vitamins A, C, and E have all been shown to be beneficial for your eyes. Where can you get these nutrients? […]

Variations in How Our Eyes Perceive Color – The Dress That Nearly Broke the Internet

If you didn’t see the photo of the infamous dress, you probably heard about it. No, not the latest Kim Kardashian waste of time, but a simple dress worn to a February wedding in Scotland. It was a dress with bands of two colors.
The issue isn’t the dress itself; it’s how people perceive the colors of the dress. And across the Internet there is night and day disagreement between the two camps. Some people see the dress as bands of gold and white. Others see it as blue and black.
How is this possible? How can different people see the same object, in this case a color-banded dress, as different colors? The answer comes in the way humans have evolved to see color in a sunlit world.
This is how we see things. Light enters the eye through the […]

Why Babies Are Born With Blue Eyes

Many babies appear to have blue eyes when are born, but be aware that their color will probably change.

Melanin, which is the brown pigment that provides color to our skin and eyes, has not been fully deposited in our eyes as a newborn baby.  As a baby’s eyes are exposed to light, the melanin production is started in the iris.  The iris is the colored part of the eyes that regulates how much light enters our pupils.

When the iris contains a lot melanin, eyes appear brown.  Less melanin gives us green, gray, or light brown eyes.  If very small amounts of melanin is deposited then we have blue eyes.  People diagnosed with albinism have no melanin deposited and their  eyes have a pink hue.

The production of melanin increases mostly during the first year of life.  At 6 months of […]

Night Vision Problems

Many people have night vision problems. There are many causes of a decrease in night vision.  Some are treatable and some are not.

The most common cause of a decrease in night vision is the formation of a cataract.  Cataracts are a clouding of the lens in the eye which can cause blurry vision or halos and glare around lights. Patients may find it difficult to drive at  night with these symptoms.  Having cataract surgery would greatly improve a patients night vision.

Diabetic retinopathy in its early stages is another cause of night vision problems. There is a gradual damage to blood vessels in the retina by diabetes and the focus of images on the retina is affected.  There is also a longer adjustment time in ones vision when going inside from outside when there are diabetic changes.  Seeing an eye […]