Topography in contact lens practice

Modern topographers offer a range of features above and beyond that of standard corneal topography alone. In a workshop session run by Martin Conway (Contamac UK), delegates at the recent Scottish Contact Lens and Ocular Surface Society (SCLOSS) conference undertook four tasks, each showcasing a different topography instrument with the aim of taking measurements and understanding the implications of the different feature sets incorporated into each device.

Station 1 Composite topography (supported by BIB)

Using the latest incarnation of the Medmont E300 corneal topographer, the aim of this station was to demonstrate the increased topographical imaging coverage possible with the use of map compositing. First described in 2006, the use of video compositing for the extension of standard mapping has not previously been available in a commercial machine. A recently introduced software upgrade to the Medmont system (Medmont Studio 5) now offers the ability to image and composite multiple image scans.