EYE EXAMINATIONS

The content of an eye examination has changed considerably over the last few years. Although it depends where you go to have your test here is a brief guide to some of the tests we undertake at Eden Eyecare.

Refraction 

This is the procedure the Optometrist uses to get your prescription for glasses. You will view a chart in a mirror that makes the letters look 6 metres away through a trial frame. Different lens strengths are placed before your eyes allowing you to see the letters look clearer or more blurred.
This test will also help the Optometrist determine if you are long or short sighted.

Slit Lamp Exam 

This is a specialised microscope that shines a beam of light at your eye.  You may also have your pupils dilated during this exam. This test can help diagnose conditions such as glaucoma, cataracts, macular degeneration, corneal injuries and dry eye disease.

Corneal Topography 

This is a computerised test that maps your cornea. It shows problems with yours eyes surface such as scarring, conditions such as astigmatism or keratoconus. It may be used before surgery, a corneal transplant or contact lens fitting.

Non Contact Tonometry

This helps test the pressure in your eye that can lead to glaucoma. A puff of air is blown at the eye measuring the pressure indirectly by the eyes resistance to the air puff.
Applanation instruments are more accurate for this and are used in hospital.

Applanation Tonometry

This test measures the pressure in the eye by measuring the amount for force required to flatten a portion of your cornea. You will be given drops to numb your eye before this test is performed. It is the most accurate way of obtaining eye pressure readings. 

Dilated Pupil Exam

Special drops are used to dilate the pupil then a lens called a Volk lens is used to view the retina at the back of the eye. This is the most accurate way of viewing the posterior eye. This has many uses but if symptoms of flashing lights and/ or floaters are reported this test will be used.

Optical Coherence Tomography

This is an advanced computerised test that scans the back of the eye and tissue behind the retina. It is the latest procedure in ocular medicine allowing detailed images that cannot be seen with conventional methods such as an ophthalmoscope.

Visual Field Test

This measures your peripheral vision. You will look at a target on a screen. As you look at this target a spot of light will appear in several locations on the screen. You will then be asked to press a button each time this spot appears. It is used to help the Optometrist determine if strokes, glaucoma or even certain medications have affected your vision.

Retinal Photography

This exam, by recording the images of your retina, helps the Optometrist keep up to date information of the health of your eyes. When you return to the practice any changes that may have occurred can then be assessed.

How often should I get my eyes tested.

This will depend on several factors such as age, your eyes and family history.
If you don’t have any eye problems or family history of eye problems you will usually be advised to have an eye examination every 2 years.
If you have had eye problems in the past or have a family history of eye problems then you may be advised a test every year is appropriate.

How to prepare

When you contact the practice to make an appointment mention any vision  problems you may have.
Before arriving bring a list of any questions you may have as well as any medications taken.
Bring your glasses and contacts with you to the consultation. You may have drops that dilate your pupils so your eye will be sensitive to light. Sunglasses may help with the sun following this test if required.