A myopia test, also known as a nearsightedness test, is a comprehensive eye examination used to diagnose and assess the severity of myopia. It involves several procedures to determine if you have difficulty seeing distant objects clearly.
What Procedures are Involved?
The myopia test typically includes the following:
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Visual Acuity Test: This measures how well you see at different distances. You'll read letters or symbols on an eye chart (like a Snellen chart), identifying them from a specific distance. The result is expressed as a fraction (e.g., 20/40), indicating your vision compared to a person with normal eyesight. [Source: AOA, Johns Hopkins Medicine, Cleveland Clinic]
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Refraction Test: This test determines your refractive error—the extent to which your eye focuses light incorrectly. This is crucial for determining the correct prescription for glasses or contact lenses if needed. [Source: Cleveland Clinic, Johns Hopkins Medicine]
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Slit-Lamp Exam: This detailed examination uses a special microscope to assess the structures within your eye, looking for any abnormalities that might contribute to or be associated with myopia. [Source: Cleveland Clinic, Johns Hopkins Medicine]
Several online tests offer self-screening for myopia, but these are not substitutes for a professional eye exam. These online tools generally only test visual acuity. [Source: Medindia] A qualified optometrist or ophthalmologist should perform a complete eye examination for an accurate diagnosis. [Source: NHS, Mayo Clinic]
The testing process usually involves examining one eye at a time, starting with the top of the chart (if using a Snellen chart) and progressing downwards. [Source: PMC]
