長時間使用電腦或智能手機對眼睛不利 Adverse effects to your eyes of prolonged use of computer or smartphone

電腦或智能手機顯示屏會發出強烈藍光。藍光誘導眼部光化學疲勞，損傷眼部視網膜細胞，越來越多人因此而視力受損，眼乾疲勞。

視網膜色素上皮（RPE）是在視網膜週邊和外圍的色素細胞層，其有助滋養視網膜神經組織。 RPE含有大量的類胡蘿蔔素葉黃素、玉米黃質和內消旋玉米黃質。這些天然色素能形成一副“專門吸收藍光的生物太陽眼鏡”！

另外，類胡蘿蔔素中，只有葉黃素、玉米黃質和內消旋玉米黃質能聚於眼部黃斑部分，黃斑部是視網膜中心位置負責視力的主要區域。這些天然色素除能提供過濾藍光的特性之外，同時具有抗氧化和抗炎活性，有效預防與年齡相關的眼部黃斑病變（AMD），AMD是年長人士喪失視力的主要原因。

雖然雙眼無法逃避藍光，懂得保護眼睛同樣重要。每日服用葉黃素、玉米黃質和內消旋玉米黃素等補充劑防患於未然，簡單而有效。

Computer or smartphone monitors emit strong blue light.  Blue light induces photochemical stress that damages cells in the eyes’ retina which can lead to their destruction.

The retinal pigment epithelium (RPE) is a layer of pigmented cells next to and outside of the retina that nourishes retinal nerve tissue. The RPE contains a high amount of the carotenoids lutein, zeaxanthin and meso-zeaxanthin. These pigments have been characterized as forming “a kind of biological sunglasses that absorb blue light

Of all the carotenoids that are absorbed by the human body, only lutein, zeaxanthin and meso-zeaxanthin accumulate in the macula, an area at the center of the retina responsible for central vision. In addition to their blue-light filtering property, these pigments have antioxidant and anti-inflammatory activities, all of which help protect against age-related macular degeneration (AMD), a leading cause of vision loss in older men and women.

While one can’t avoid exposure to blue light these days, protecting oneself may be as simple as adding lutein, zeaxanthin and meso-zeaxanthin to one’s supplemental regimen.