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A Routine Eye Examination Tests

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EyeSee Optique
A Routine Eye Examination Tests

Vision simulator astigmatism is a common vision condition that causes blurred vision. It occurs when the cornea (the clear front cover of the eye) is irregularly shaped or sometimes because of the curvature of the lens inside the eye. Most people have some degree of astigmatism. Blurred or distorted vision at all distances, headaches, eye strain especially when the eye must focus for long periods, as in reading from paper or a computer monitor, difficulty in driving at night, etc. are symptoms of astigmatism.

                                     eye examination

An eye examination is a series of tests performed to assess vision and ability to focus on and discern objects. It also includes other tests and examinations pertaining to the eyes. Eye examinations are primarily performed by an optometrist, ophthalmologist, orthoptist, or an optician. Different types of eye exams.

Eye muscle test

This test evaluates the muscles that control eye movement. Your eye doctor watches your eye movements as you follow a moving object, such as a pen or small light, with your eyes. He or she looks for muscle weakness, poor control, or poor coordination.

Visual acuity test

This test measures how clearly you see. Your doctor asks you to identify different letters of the alphabet printed on a chart (Snellen chart) or a screen positioned some distance away. The lines of type get smaller as you move down the chart. Each eye is tested separately. Your near vision also may be tested, using a card with letters like the distant eye chart. The card is held at reading distance.

Refraction assessment

Light waves are bent as they pass through your cornea and lens. If light rays do not focus perfectly on the back of your eye, you have a refractive error. Having a refractive error may mean you need some form of correction, such as glasses, contact lenses, or refractive surgery, to see as clearly as possible.

Visual field test (perimetry)

Your visual field is the full extent of what you can see to the sides without moving your eyes. The visual field test determines whether you have difficulty seeing in any areas of your overall field of vision. The different types of visual field tests include:

• Confrontation exam. Your eye doctor sits directly in front of you and asks you to cover one eye. You look straight ahead and tell the doctor each time you see his or her hand move into view.
• Manual testing, including tangent screen and Goldmann exams. You sit a short distance from a screen and focus on a target at its center. You tell the doctor when you can see an object move into your peripheral vision and when it disappears.
• Automated perimetry. As you look at a screen with blinking lights on it, you press a button each time you see a blink.

After administering eyedrops and giving them time to work, your eye doctor may use one or more of these techniques to view the back of your eye.

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