Comprehensive Eye Exam: What Does It Include?

Many people come to the office thinking they simply need a new glasses prescription. However, blurred vision, burning, tearing, headaches, or eye strain can have many different causes.

A comprehensive eye exam goes beyond determining how much prescription a person needs in their glasses. The goal is to evaluate how well they are seeing, assess the health of the eyes, and determine whether there is any condition that requires treatment or follow-up.

What is checked during a comprehensive eye exam?

The visit begins with a medical history and a discussion of the reason for consultation. It is important to know when symptoms started, whether they have changed over time, which medications the patient uses, and whether there are relevant medical or ophthalmologic conditions.

The examination may then include:

• visual acuity testing;

• evaluation of the glasses prescription, when needed;

• measurement of intraocular pressure;

• examination of the eyelids and ocular surface;

• evaluation of the cornea, conjunctiva, iris, and lens;

• examination of the retina and optic nerve when indicated.

Not every eye examination is exactly the same. Tests and measurements are selected according to the patient's age, symptoms, medical history, and findings during the examination.

For example, a patient with blurred vision requires a different evaluation from someone who comes in because of tearing, a drooping eyelid, or an eyelid lesion.

A vision check is not the same as an eye examination

A refraction or vision check helps determine whether someone has myopia, hyperopia, astigmatism, or presbyopia and calculates the appropriate glasses prescription.

An examination with an ophthalmologist goes further.

Some eye diseases may cause few or no symptoms during their early stages. There are also problems that patients may initially attribute to fatigue or a change in prescription but that actually have a different cause.

For this reason, persistent symptoms or changes in vision should be evaluated by examining the eye as a whole rather than focusing only on the prescription.

When should you have your eyes checked?

An eye examination is recommended if you develop:

• blurred or decreased vision;

• eye pain;

• persistent redness;

• frequent tearing;

• foreign-body sensation or dryness;

• flashes of light or new floaters;

• changes in the eyelids;

• a lesion around the eye that does not go away.

A sudden decrease in vision, a sudden increase in flashes or floaters, or severe eye pain should be evaluated more promptly.

Regular examinations are also advisable for people with conditions such as diabetes or hypertension, a family history of glaucoma, or other conditions that may affect the eyes.

Is pupil dilation always necessary?

Not necessarily.

Dilating the pupils allows a more detailed examination of the retina, macula, and optic nerve, but it is performed when the reason for consultation, medical history, or examination findings make it appropriate.

When the pupils are dilated, temporary light sensitivity and blurred near vision are normal for several hours.

What if the problem involves the eyelids or tear ducts?

An ophthalmologic examination can also include the structures surrounding the eye.

Conditions such as eyelid ptosis, entropion, ectropion, persistent tearing, chalazion, or other eyelid lesions may require a more specific evaluation of eyelid position and function or of the tear drainage system.

This is important because some problems that appear to be purely cosmetic may also have a functional component.

What happens after the examination?

The most important part of the consultation is understanding what was found and what comes next.

For some patients, observation or medical treatment may be enough. Others may need additional testing, a change in prescription, an office procedure, or evaluation for surgery.

Not every symptom requires extensive testing, and not every patient needs treatment. The purpose of the examination is precisely to determine what is necessary in each individual case.

If you have noticed changes in your vision, persistent eye discomfort, or changes in your eyelids, you can schedule an eye examination.

You can also learn more about our Ophthalmology and Oculoplastic Surgery services.