Dry Eye Disease (DED) is one of the most commonly clinically diagnosed ocular conditions. Despite its importance, the diagnostic methods suffer due to significant limitations. Thus, currently, there is still no gold standard method used for dry eye diagnosis and new inexpensive and easy to use tools are required in clinical practice. In this sense, a new method for DED diagnosis based on corneal reflex image degradation was proposed at CD6-UPC. However, this new technique currently presented a limitation, as its measured area was too small. The aim of this work was to improve the previously mentioned setup designed by Aldaba et al., in CD6, by increasing the diameter of the measured area with a new optical design. The new setup showed a similar performance when compared to the original, and the recorded images were comparable. However, the measured area was smaller than the expected theoretical diameter. Several reasons that could explain these differences were studied, including: Gaussian beam, the laser source and the incidence lens used. Changing the objective lens may be a factor to avoid he limitation in the measured diameter, and more work is to be done in this sense. Moreover, the system has been observed as being sensitive to small movements of the patient, which should also be improved in future work
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