Centre for Contact Lens Research

Participant Information

Research

The CCLR’s primary interest is the ocular surface and its responses to various stimuli and conditions, including contact lens wear. In addition to clinical trials and after-market testing of contact lenses and lens care systems, we have the capacity to pursue more fundamental questions about the physiology of the ocular surface, which we investigate using state-of-the art instruments and innovative precision imaging techniques. The following list outlines the current breadth of our research capacity

Dry eye

  • Tear film
  • Meibomian glands and meibum analysis
  • Corneal and conjunctival staining

Ocular response to contact lens wear

  • Cornea
  • Conjunctiva
  • Tear film
  • Lid

Cell collection, classification and evaluation

  • Cell morphology
  • Viability of ocular surface cells
  • Biochemical quantification of PMN

Cytotoxicity of lens care systems

  • Solution-induced corneal staining

Biomaterials development and evaluation

  • Biocompatibility of implant materials
  • Characterization of lenses (power, thickness, water content)
  • Quantification and characterization of contact lens deposits
  • Efficacy of UV ocular protection
  • Materials designed for drug delivery (development and after-market testing)
  • Nanoparticles and molecular imprinting

Comfort (sensory and symptoms)

  • Corneal and conjunctival sensitivity
  • Development of subjective scales and questionnaires

Understanding, assessing and grading corneal and conjunctival staining

  • Solution-induced corneal staining
  • Upper lid margin
  • Contact lens edge
  • Superficial punctate staining related to dry eye

Ocular development

  • Animal models

Properties of lens materials, care systems and packaging solutions

  • Contact lens dehydration
  • Wettability of contact lens materials
  • Lens surface deposition, osmolality, pH, surface tension and viscosity
  • Efficacy of protein and lipid removal from contact lenses

Patient input

  • Quality of life
  • Large-scale, multi-site surveys (patient- and practitioner-focused)
  • Focus groups and one-on-one interviews

Microbiology

  • Antimicrobial efficacy of multipurpose lens care systems

Refractive error and optical performance

  • Contrast sensitivity
  • Aberrometry
  • Glare/halo measurement