Research Projects

Introduction

The Research in Orthokeratology (ROK) Group in the School of Optometry and Vision Science at the University of New South Wales has received funding over a number of years from the Australian Government and contact lens industry partners to pursue research aimed at developing new products for OK, but also at understanding the corneal tissue response to overnight OK so that the procedure can be made as safe and effective as possible.

Our current research involves the following types of studies:

  • Short-term lens-wearing trials: Experimental lenses are worn in the open eye for between 15 minutes and 4 hours. You would need to be available during the day and prepared to come to UNSW to participate in these studies.
  • Overnight lens-wearing trials: Once the lens designs have been optimised on the basis of short-term lens-wearing trials, we will ask subjects to wear experimental lenses overnight during sleep. We need to assess the lenses very soon after eye opening, so it would be best if you live close to the UNSW campus at Kensington.
  • Following on from the short-term and overnight trials, we will recruit subjects to wear lenses in the “real world” for periods ranging from two weeks up to 3 or more months. Lenses will be individually tailored to each subject’s eyes, and will be worn during sleep only. We will require you to attend our clinic on UNSW campus for regular checkups and measurement sessions during these dispensing studies.


Current ROK research projects

Can OK lenses be used to correct presbyopia?

We are currently recruiting subjects aged between 45 and 60 who require glasses for reading and near work only, to test novel OK lens designs for the correction of presbyopia.

Developing an OK lens design to correct corneal astigmatism

Preliminary research is underway to investigate the performance of OK lenses on eyes that have high degrees of corneal astigmatism or irregularity. Results from these preliminary studies will guide the development of lens designs to correct astigmatism through corneal reshaping.

The effect of OK lens wear on corneal sensitivity and corneal nerve morphology

We will soon be recruiting myopic subjects to wear OK lenses for myopia correction for up to 3 months. During this period of lens wear we will monitor the sensitivity of the cornea and capture maps of the corneal nerves using sophisticated imaging technology.

Harnessing contact lens design to optimise optics and vision in OK

Novel sophisticated instrumentation and mathematical models are providing us with insights into subtle lens design changes that might improve the subjective visual quality experienced by wearers of OK lenses for myopia, hyperopia and presbyopia.

Optical aberrations for myopia correction and control

Following on from our work demonstrating that OK lens wear may slow myopia progression in children, we will soon conduct studies with the aim of manipulating lens design and optimising the corneal reshaping process to maximise the myopia control effect for individual children.