Protecting Your Eyes Eye Exams


Just like a regular physical checkup with your family physician, a regular eye exam with an ophthalmologist is good practice to maintain good eye health and good vision and to identify and treat eye disease early. Early treatment is critical to saving vision in many cases.

 


When to have an eye exam

People with risk factors including diabetes or a history of eye injury, and African Americans over 40, might need to have exams more often than the recommended eye exam schedule. Generally, children will be screened during pediatric physical exams and will be referred to an ophthalmologist as needed. Adults should go to an ophthalmologist if they experience visual changes, eye pain or other symptoms — flashes of light, seeing spots of ghost-like images, lines appear distorted or wavy, dry eyes with itching and burning. Everyone is advised to have a baseline exam with an ophthalmologist at age 40.


Who should perform an eye exam

When you go to "get your eyes checked," there are a variety of eye care providers you might see. Ophthalmologists, optometrists and opticians all play an important role in providing eye care services. However, each group has different levels of training and expertise. Ophthalmologists are medical doctors and the only group of eye care specialists who can provide the full spectrum of eye care—from prescribing glasses and contact lenses to complex and delicate eye surgery such as LASIK, to diagnosing and treating eye diseases.  Find out more about the different kinds of eye care providers, and the difference between ophthalmologists and optometrists.

Who should give you a vision exam? There are a variety of eye care providers you could see, including ophthalmologists and optometrists. Ophthalmologists are medical doctors and the only group of eye care specialists who can provide the full spectrum of eye care—from prescribing glasses and contact lenses to complex and delicate eye surgery such as LASIK, to diagnosing and treating eye diseases.  Find out more about the different kinds of eye care providers, and the difference between ophthalmologists and optometrists.


What to expect

Your visit to an ophthalmologist will start with a series of questions about your medical and eye health history. This will be followed by a series of tests to check your visual acuity and to examine your eye for disease. Your ophthalmologist will use eye drops to dilate, or enlarge, your pupils, so he or she can examine the inside of your eye. You may be more sensitive to light and have difficulty driving while these drops are in effect. Ask your doctor whether you need to make arrangements for a ride home after your eye exam, and bring a pair of sunglasses. After your exam, your ophthalmologist will discuss any findings and make recommendations for corrective lenses, surgery, medications or treatment of any diseases.


Common tests

Below are some common tests that your ophthalmologist may perform during your eye exam.

Retinoscopy to approximate your prescription for a starting point
With the room lights dimmed, you will be asked to stare at a particular point while the doctor shines a light at your eye and flips lenses in a machine in front of your eyes.

Refraction to determine your exact prescription.
Resting your chin on an instrument called a phoropter, you will be asked to look through a series of lens choices and say which is best for your vision. More information

Cover Test to check for strabismus or other binocular vision problems
While you focus on a small object at a distance, the ophthalmologist will cover each of your eyes alternately and observe how each eye moves. The test is repeated with an object close up. More information

Slit-Lamp or Biomicroscope Examination to identify signs of infection or disease.
With your chin on the chin rest of the instrument, your ophthalmologist will shine a light into your dilated eyes and look through a set of eyepieces. With this instrument, your ophthalmologist can examine the front of the eye—lids, cornea, conjunctiva, iris—and, using a special high-powered lens, the interior and back of the eye—retina, optic nerve, macula, and more.

Glaucoma Test to measure the pressure inside your eye.
There are two glaucoma tests: the “puff of air” (non-contact tonometer)
With your chin on the machine’s chin rest, you will look at a light, while the ophthalmologist puffs a small burst of air at your open eye. This is completely painless. The machine calculates your intraocular pressure.

Applanation tonometer
For this test, your ophthalmologist will use a yellow eyedrop to numb your eyes. While you stare at a light, your ophthalmologist will touch a bright-blue glowing instrument to the front of each eye and manually measure the intraocular pressure. This is completely painless. More information

Visual Field Test to check for blind spots in your peripheral or “side” vision
Blind spots can originate from eye diseases, such as glaucoma, or from brain damage caused by a stroke or tumor. One of your eyes is temporarily patched during the test. You are asked to look straight ahead at a fixed spot and press an indicator button when spots of light appear in your field of vision. More information

Healthy Eyes for Every Stage of Life
What should you know about eye care and prevention for you and your children?