Optical and biometric indicators of the eye in children with juvenile glaucoma combined with myopia

Abstract

Purpose. To analyze optical and biometric indicators of children's eyes with various stages of congenital juvenile glaucoma (CJG) combined with myopia.Material and methods. We examined 17 patients (31 eyes) aged 11 to 17 (averagely 14.0 ± 0.2 years) diagnosed with CYG who underwent, prior to surgical or conservative treatment, a regular ophthalmological examination supplemented with the measurement of the central corneal thickness (on an automatic contactless tonometer-pachymeter by NIDEK, USA), and the index of corneal deformation (ICD) by the Shkrebets technique.Results. The analysis showed a possible correlation between 1) tonometric intraocular pressure (Pt) and the axial length of the eye, 2) Pt and the ratio of excavation to optic disk diameter (E/ON), 3) axial length of the eye and the central corneal thickness at the terminal CYG stage, and 4) the axial length and the refraction at the initial stage of CYG.Conclusion. As the glaucomatous process progresses, children with CYG combined with myopia show an increase of myopic refraction, a decrease in fibrous membrane rigidity, pretrabecular and trabecular changes, axial elongation, increased IOP due to an imbalance between the production of intraocular fluid and its outflow, an expansion of the excavation of the optic disk and a decrease in the central corneal thickness.