The effects of cataract surgery on autonomic heart rate control: a prospective cross-sectional and analytical study.

Objectives: We aimed to evaluate the effects of cataract surgery on cardiac autonomic modulation.

Methods: A cross-sectional and analytical study was conducted at the Hospital Maria Braido in the city of São Caetano do Sul, São Paulo, between 2015 and 2016. We investigated 19 patients of both sexes who were all over 50 years old; all patients had a diagnosis of senile or bilateral cataracts and were recommended to undergo implantation of the intraocular lens.