Irreducible Complexity? – Eye Evolution Explained

The human eye is a wonderful and complex organ that has provided us with an amazing evolutionary advantage – but how did it come about? Learn about ‘irreducible complexity’ with this video, featuring science communicator Alom Shaha, which explains the process of the eye’s evolution.

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Irreducible Complexity?

Evolution of the Eye Video

Top Modern Eye Dangers and how to prevent


UV Light


Risk

UV can increase the risk of premature ageing of the eyes as well as diseases like cataracts and skin cancer. Around 60% of UV exposure comes from direct sunlight, but the rest comes from reflections from glass buildings, water, the ground, the sky and even from the rear side of your lenses if they are not UV protected.


Prevention

Wear sunglasses (or clear lenses with UV filters) that have a high Sun-Eye Protection Factor and UV protection on the front and back of the lenses.



Blue-Violet Light


Risk

Staring at bright screens all day and late at night exposes our eyes to Blue-Violet light – which can potentially be harmful to retinal cells. This type of light is also emitted from the sun and from LED lighting and can contribute to premature ageing of the eyes.


Prevention

Wear lenses that protect against blue-violet light – but ensure the lenses do not filter blue-turquoise light (which some do) as this contributes to a healthy sleep cycle.



Diet and Health


Risk

Obesity and a lack of exercise can have a profound effect on your overall health. In particular, not eating the right foods and not exercising can impact on the healthiness of your eyes. Certain vitamins and nutrients can help prevent cataracts and lowering high blood pressure will reduce the chance of complications.


Prevention

Eat a healthy, balanced diet, exercise regularly and get your eyes tested at least once every two years.



Eye Strain


Risk

Computer Vision Syndrome (CVS) is a potential side-effect of looking at screens for an excessive amount of time. Constantly changing focus and the position of our eyes can strain them. This can lead to headaches, sore eyes, blurred vision, stiff neck and shoulders and fatigue.


Prevention

Take regular breaks from screen activity – every 20 minutes, look at something 20 feet away for 20 seconds. Ensure the screen is clear and at the right contrast and brightness settings. Blink often to keep the eyes moist and use eye drops.

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