The Importance of Eye Chart

At some point in our life, many of our body organs and/or senses will degenerate. And vision has no exemption to that. The normal vision is 20/20, which means the person is able to read or see the objects even if it is 20 feet away. But because of lifestyle, accident, disease, or hereditary factors, our visual acuity becomes poor overtime. Fortunately, along with the advances made in technologies, eye specialists find solutions for us to maintain good eyesight. It may be through surgery, wearing of eyeglasses or contact lenses.

How will we know if it is now time to wear eyeglasses or contact lenses? That will be based on the eye examination result. The ophthalmologist or the person in charge for indentifying eye problems will first conduct an external eye examination then followed by visual acuity.  In determining visual acuity, the ophthalmologist basically makes use of a medical instrument called eye chart. This is one of the important tools being used by eye specialist in determining whether a person is experiencing eye problems or not.

To determine the visual acuity, the ophthalmologist will request the patient to read the characters provided on the eye chart while standing 20 feet or 6 meters away from the chart. Every line of character has a corresponding value. The ability to read the smallest character means having good eyesight.  Aside from testing the visual acuity, the amplitude of accommodation test is the next step. In this examination, the eye specialist wants to find out your ability to focus clearly on objects when they are placed near. Your ability to identify the right color is also checked, followed by a cover test, stereopsis, and extraocular motilities. The ophthalmologist will also check the condition of your internal eye including the pupil, its blood vessels, retina, and the likes using specialized medical equipments.

If for instance your examination brings you good result, then you’re lucky. However, if eye problems arise, treatment will depend on the severity of the disorder.

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