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Complete Eye Examinations

Eye Examination

An eye examination includes a review of your medical history, an analysis of your visual acuity, which may or may not include a prescription for glasses, an examination of the eye's physical well-being, content and surrounding tissue, and an evaluation of the eye's connection with the visual system inside your brain.

Who needs an eye examination?

An adult examination may require eyeglass measurement (refraction) for optimal visual acuity, screening for glaucoma, analysis of eye structures and surrounding tissues, and recommendations for treatment as necessary. Adult examinations look for diseases which can be treated or prevented so that sight can be restored or protected from further or future loss of vision.

How often should I have my eyes checked?

Adults with normal findings on initial examination should have their eyes checked every two to four years, depending on age. Below is a general chart:

Age Caucasian African-American
20-39 Every 3 - 5 years Every 2 - 4 years
40-64 Every 2 - 4 years Every 2 - 4 years
65 or older Every 1 - 2 years Every 1 - 2 years

Adults who are being treated for specific eye conditions will need to return for follow up more frequently and we will provide you with a specific time interval when you should return. We will schedule this appointment for you if you wish, or can provide you with a reminder card that will be mailed to you prior to when you should be seen again.

How is an eye examination performed?

Dr. Tokuhara uses the most modern testing equipment that allows us to carefully screen for refraction. Before an eyeglass prescription is written, this screening information is retested by one of the doctors to make sure it is correct. Glaucoma testing includes a measurement of eye pressure. Ocular alignment is evaluated for cross eyed or other eyestrain caused by strabismus (eyes are not aligned and there is a stress in the ability of the two eyes to view the same target). A careful analysis of the external structures around the eyes is performed, including the eyelid, lashes, tear drainage and eye moisture. A careful analysis of the internal structures of the eye includes the cornea, iris, pupil, lens, vitreous, retina, optic nerve, and blood vessels.

As necessary, further testing is performed, which may include measurement of actual tear production, cell thickness and condition of the cornea, an analysis of risk of glaucoma (gonioscopy), a detailed evaluation of peripheral vision or visual field, a quantitative and qualitative measurements of the optic disc and retina, and wavefront analysis of internal and external ocular tissue.

Is a refraction (measurement for eyeglass prescription) a part of every examination?

Our job is to evaluate and care for people's eyes. As part of this, we must know how well you see. To accomplish this, we must do enough of a refraction to score a person's visual acuity. Knowing how well a person sees and obtaining a basic knowledge of a person's general refraction is done on nearly every patient who comes to our office except in emergency, or a few other situations when we may not be initially able to obtain this information.

What will happen to my eyes during my examination?

Most adult patients will be given eye drops that allow us to check for glaucoma. These anesthetic eye drops sting a little for a few moments and then quickly wear off.

Patients will be given "dilating drops" that open the pupils widely so that we can evaluate the back of the eye and so that we can measure the eyeglass refraction most precisely. These dilating drops may cause some loss of near vision/reading vision for a few hours. Dilating drops may also cause significant difficulty in bright sunlight.

Why do you have to do all of this?

In order to take care of you to the best of our ability, and in order to be as thorough as possible in examining you, all of the tests and eye drops are necessary. Should you have any question about this, please ask one of our fine eye technicians or Dr. Tokuhara. Your sight is precious; we want to do the best job possible taking care of you.

DVC Promise

Dr. Tokuhara performs advanced technology diagnostic testing and treatment, as well as taking the time necessary to provide each patient with information needed to fully understand his or her condition and to achieve the best possible visual outcome.