Pseudophakic anterior chamber depth measurement

Sir,

Nanavaty et al's¹ hypothesis that a greater amount of post-phacoemulsification anterior capsule/intraocular lens overlap results in a greater amount of pseudophakic accommodation is intriguing and argued persuasively. However, despite their claims, to the contrary, IOLMaster (Carl Zeiss Meditec) measurements of anterior chamber depth (ACD), based on a slit lamp photographic technique, are generally considered unreliable in pseudophakic eyes^{2, 3} and we believe that this may confound their conclusions. As described, immersion ultrasound and partial coherence interferometry are the golden standards for pseudophakic ACD measurement.