Clinical and imaging features of congenital and acquired isolated inferior rectus muscle hypofunction.

ABSTRACT:

Background

Inferior rectus (IR) underaction may arise from various causes that are distinguishable through imaging. We investigated clinical and imaging characteristics of congenital and acquired causes of IR underaction.

Methods

Cases of IR underaction were selected from data prospectively collected in a study of orbital imaging in strabismic patients.

Results

Review identified 3 cases of congenital IR underaction (2 with bilateral IR aplasia and 1 with unilateral IR hypoplasia), 12 acquired cases, including 4 due to denervation (2 idiopathic, 1 after multiple strabismus surgeries, 1 after head trauma), and 8 cases of direct IR damage (5 with orbital trauma and 3 with previous surgery, including 2 sinus surgery and 1 laser blepharoplasty). Of the 23 cases, 11 adults

SUBMITTER: Solanes F 

PROVIDER: S-EPMC8169540 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature