Sir,

We thank Knox Cartwright and Tole for reiterating our discussion on the methodology involved in this study. As discussed in the paper, Zeiss AC Master (based on the principle of partial coherence interferometry) could have been a better alternative.1 Zeiss AC Master is no longer available commercially and so slit-lamp assessment of anterior chamber depth remains one of the methods that can be used if anterior segment OCT2 or ultrasound biomicroscopy3 is not within practical reach. Moreover, the technique of anterior chamber depth measurement with IOL Master has already been reported to have a good reproducibility.4 The authors had subjected all the patients to the standard technique so that any bias (if present) may be nullified and the validity of the results are not affected.

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