Session: Poster session C

Clinical features of oculomotor disorders in children with primary congenital glaucoma.

INTRODUCTION 

Oculomotor disorders are reported in congenital glaucoma (CG), but there are few data concerning this topic. This study aims to describe the clinical features of oculomotor disorders associated with congenital glaucoma. 

 

METHODS 

A retrospective study was conducted using registries of children operated on for primary congenital glaucoma (PCG) between 2015 and 2022. We recorded the oculomotor disorders, its characteristics, refractive data and associated amblyopia. 

 

RESULTS

48 children were included, 25 boys and 23 girls. Mean follow-up was 64.5 months for strabismic children versus 73.2 months for non-strabismic. Only 2 children had unilateral GC. 25% of those included (13 children) had strabismus. Of these, 4 had convergent strabismus (30%) and 9 divergent strabismus (68%). All these children had lower best corrected visual acuity (BCVA ) (profound or moderate amblyopia with BCVA below 0.6 LogMAR). We found a greater myopic mean spherical equivalent (SE) in the strabismic population (mean SE-1.75 D) than in the non-strabismic population (mean SE -0.35 D). 

 

CONCLUSIONS

This study shows a higher proportion of divergent strabismus in this population, in contrast to the general population. Most children managed for PCG with strabismus had reduced visual acuity. Nystagmus appears to occur at a BCVA of less than 0.6 LogMAR in our series. This amblyopia seems to have both an organic origin (lack of corneal transparency due to Haab's striae and optic nerve lesions) and a refractive origin (with axial myopia linked to the increase in axial length associated with high intraocular pressure).