Instruments and Tests
Auto Refractor & Keratometer
This machine estimates the power of the eye and measures the shape of the front surface of the eye. The information assists us in determining the strength of glasses prescriptions and the fitting of contact lenses. Some models such as the one we use, can also image cataracts and defects in the cornea.
The lensometer helps us estimate the prescription of your current glasses. This helps us discuss with you how much your prescription has changed, if a change in your lenses or glasses makes sense, and the vision you can expect from your new pair.
Computer assisted examination of your visual field can uncover defects in a person's field of view. Weakness or deficiencies may be caused by various conditions affecting the eyes or brain.
Digital Retinal Camera
Digital photography of the back of your eye gives us immediate information on the status of your optic nerve and retina. Detection of (potential) problems allows us to document and monitor for changes over time. It also allows us to have a meaningful discussion about your eye’s health.
Illuminator for Pupillary Testing
Your pupils control the amount of light entering your eye. They also respond to other stimuli like hormones or inflammation. Our Langley optometrist will evaluate them and look out for potential problems in the motor and sensory activity of your eyes.
Visual Acuity System
Your visual acuity represents your clearest vision or the smallest letters you are able to read on a standardized chart located at 20 feet away.
The phoropter allows us to carry out a proper "refraction". This is the process that allows us to not only fine tune your prescription for eye glasses or contact lenses, but also balance the vision between the right and left eye.
Clinical Slit Lamp
This highly versatile instrument allows our Langley optometrist to evaluate the visible layers of your eyes from front to back. Additionally, various handheld specialized lenses are utilized in combination with the slit lamp to extend our view to other hidden structures in your eye. This makes it one of the most indispensable tools for eye specialists around the world.
The Goldmann Applanation Tonometer is the gold standard in tonometry. It remains the most widely used instrument to measure eye pressure because of its accuracy and reproducible results. It allows us to measure your eye pressure while at the slit lamp and is done as part of the routine eye exam.
Binocular Indirect Ophthalmoscope
This isn't one of those VR headsets but the images we see inside your eyes do seem 3D. We use the BIO to inspect your retina which is the layer at the back of the eye. Oftentimes, because your pupils are not large enough, we put dilating drops. Afterwards, expect your eyes to be light sensitive and unable to focus well so we advise having a pair of sunglasses handy.
Pachymeters are scientific instruments used to measure the thickness of the cornea using light waves or ultrasound. The device is used to detect, assess, and track a variety of ocular conditions such as glaucoma.
This tests how well both your eyes work together or your stereoacuity. It also helps us detect lazy eye or amblyopia and monitor the progress of treatments we may institute.
Colour Vision Testing
A deficiency in colour vision is usually genetically acquired. In some patients, however, it can also help detect or confirm certain eye conditions.