NICE has developed a medtech innovation briefing (MIB) on the TearLab osmolarity system for diagnosing dry eye disease.

The TearLab osmolarity system is a point-of-care device that measures the osmolarity of tears and is used to diagnose and monitor dry eye disease. The published evidence summarised in this briefing comes from 6 non-randomised studies in adults on the value of osmolarity as a biomarker for dry eye disease. Four studies of limited quality showed that tear osmolarity either predicted dry eye disease or correlated with other dry eye tests. Two studies found no or limited correlation. The average cost for TearLab testing per person, including capital equipment and single-use components, is £16.58 excluding VAT.

Medtech innovation briefings provide a description of the medical technology, including its likely place in therapy, the costs of using the technology and a critical review of the strengths and weaknesses of the relevant published evidence.

Their purpose is to provide objective information on device and diagnostic technologies to aid local decision-making by clinicians, managers and procurement professionals. By making this information available, NICE helps to avoid the need for NHS organisations to produce similar information for local use.

Medtech innovation briefings are not NICE guidance. They differ in format, contain no judgement on the value of the technology and do not constitute a guidance recommendation.

MIBs are commissioned by NHS England and produced in support of the NHS 5 Year Forward View, specifically as one of a number of steps which will accelerate innovation in new treatments and diagnostics.