Digital Imagining Systems

With advances in digital imaging technology, we are now able to capture and document any part of the eye. At Chan Visual Care Optometrist, we have digital imaging systems for both the front surface (anterior segment) of the eye, and the inside (posterior segment) of the eye. Documentation of any feature of the eye allow us to closely monitor any changes or progression in eye diseases, or any abnormal features of the eye. The pictures will be saved to your file for comparisons in the future.

Anterior segment photography also allows us to fit specialty contact lenses (such as OrthoK lenses, or rigid gas permeable lenses) much more accurately, as we can see document how the lenses behave in the eye in between visits.

As the saying goes, "a picture tells a thousand words".

Corneal Topographer

A corneal topographer is a digital imaging technique for mapping the surface curvature of the cornea (the very front, clear part of the eye). The allows our Optometrist to evaluate the shape of the cornea before any contact lens fitting, and also to detect any corneal abnormality such as irregular corneal shape or eye diseases such as keratoconus.

At Chan Visual care, we routinely take images of the cornea before any contact lens fitting. This allows us to help you find the contact lens that best suits your eyes. (A common misconception is that contact lenses are a one-size-fit-all.) Not only will a properly fitted contact lens give you better comfort and vision, it will also protect the health of your cornea from poorly fitted lenses.

Corneal topography is also a MUST when fitting children with myopia control lenses, such as Orthokeratology fitting. This will ensure that each lens is custom made according to the natural curvature of the eye, and to monitor changes in the cornea during the treatment. Improperly fitted lenses without corneal topographer will lead to serious consequences.

Tonometer

Tonometry is a test to measure the pressure inside your eyes. The test is used to screen for glaucoma.

There are many methods of testing for glaucoma.

The most accurate method measures the force needed to flatten an area of the cornea.