Response: Acute Secondary Optic Neuropathy as a Complication of a Single Episode of Acutely Raised Intraocular Pressure: A Case Series.

one moment. In this context, it would be necessary equal sample size for longitudinal studies not of cross-sectional. We totally agree that longitudinal studies will be needed to investigate the usefulness of the keratograph under different conditions in glaucoma patients, and this has already been pointed out in the manuscript. However, our study succeeded in assessing ocular surface disease in patients with glaucoma using topical medication and comparing with a control group, using not only an ophthalmologic examination and questionnaires but also objective data from a keratograph.