What is Myopia?
Myopia is also known as Near-sightedness or short-sightedness
Myopia is defined as the inability of one to see distance objects clearly, yet able to see near objects without any difficulties.
In a myopic eye, the light rays that enter the eyes fall in front of the Retina. Since the Retina is unable to perceive the light rays accurately due to the location of the light rays in the eye, the image/object appears blurred. However, when the eye is focusing on a near object, it activates its accommodation function. This function causes the constriction of the pupil which lets the light rays fall on the retina, giving a clear image of the near object.
What causes Myopia?
An eye becomes myopic when it starts to elongate posteriorly causing the retina to move further back which in turn causes the light rays to fall in front of the retina.
Up till now, there are no conclusive studies on what actually causes this elongation. Genetics play a major role in the development of Myopia. Usually if both the parents have Myopia then their children are more likely to have Myopia. However, it is not the only cause. There are other factors like poor reading habits and spending long hours holding digital devices really close to the eyes which cause visual stress.
How to prevent Myopia?
Unfortunately, Myopia cannot be fully prevented because there is no proven cause of Myopia. However, we can do our part to develop good habits which would not cause added stress to the eyes.
While reading, we should keep the books at a comfortable distance from the eyes of at least 30cm
Ensure that you read in a well-lit area
Place your computer screen at least 50 cm away from the eyes
Take a 5 minute break from looking at the screen/book every 30 to 40 mins
How to correct Myopia?
Myopia can be corrected by wearing Prescriptive Contact Lenses or spectacles. These visual aids help to direct the light rays to fall on the retina, giving clear vision. Contact Lenses would be the ideal choice to correct Myopia as it gives you a wider viewing area and is also more comfortable.
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