Causes & Diagnosis of Color Blindness

Our retina is made up of photo receptors called rods and cones. The rods, which are more in the periphery of our retina, are involved in night vision and the cones, which are located more in the center of the retina (macula), allow us to perceive color in daylight. Cones are sensitive to different wavelengths of light due to the amount and type of pigmentation that are genetically coded in them. The X chromosome carries the genes that produce the pigments in the cones that are needed to differentiate color. When the genes that code the cones level of pigment are coded incorrectly the pigments are wrong. The result is color deficiency or color blindness. […]

Difference Between Near and Farsighted

Both are refractive conditions, meaning that they are problems related to how the light is focused as it enters the eye. Ideally, as light enters the eye, without any additional effort, the light would be perfectly focused onto the inside lining of the eye which detects the light, called the retina. The brain would then see a clear view of the world. This person would not need glasses for the distance.

Nearsighted means that with your natural uncorrected vision, you can see closer or “nearer” and further out gets blurry. Nearsightedness or myopia is a refractive defect of the eye lens in which the image is formed in front of the retina not on it. This defect can have people seeing closer objects clearly while distant ones are blurred.

Farsighted is simply the opposite. Farsightedness or hypermetropia or hyperopia is a […]

How does the Beach Affect My Eyes?

When you decide to go to the beach typically you gather a few things to bring with you:

• Sun screen for your skin
• Water to keep hydrated
• Food to keep your energy up.

Your eyes require just as much protection from the sun as your skin. The sun’s ultraviolet radiation can adversely affect your eyes and eyesight unless you wear protective lenses.

If you spend a lot of your time at the beach you may be at greater risk of eye damage. Here are some short term effects of being at the beach without protecting your eyes.

Exposing your eyes to an excessive amount of ultraviolet radiation over a short period of time causes photokeratitis, which is like sunburn of the eye. Your eyes may become red, teary and extremely sensitive. The effect is usually only temporary, causing no permanent harm to […]