The influence of the fibrous capsule main parameters on the results of different methods of ophthalmotonometry in children

The comparison of the results of ophthalmometry performed using the Icare tonometer, transpalpebral tonometer TVGD-01, pneumotonometry and Maklakov tonometer in healthy children and patients with congenital glaucoma. We examined 20 children (40 eyes) with compensated congenital glaucoma at the age of 5-17 years, the control group consisted of 43 patients (86 eyes) - healthy children and children with mild myopia. The cornea radius of curvature in children with congenital glaucoma was 8,24±0,08 mm, in healthy children - of 7,68±0,03 mm Hg. Central corneal thickness in 52,5% of patients was 599,20±8,07 pm, 47,5% of patients had 508,90±7,28 pm, while children in the control group had 562,46±4,00 pm. The average intraocular pressure (Po), obtained by tonometry using Icare was 15,3±1,04 mm Hg in children with congenital glaucoma, 18,26±0,46 mm Hg in children of the control group, pneumotonometry was 16,23±2,07 mm Hg and 17,48±0,34 mm Hg respectively. Indicators transpalpebral tonometry (PT) in children with congenital glaucoma - 16,90±0,50 mm Hg, children in the control group - 18,60±0,48 mm Hg, Maklakov tonometry - 18,14±0,58 mm Hg and 18,98±0,24 mm Hg respectively. Positive direct correlation between Icare tonometry and corneal curvature radius (r=0,79) and between central corneal thickness and IOP on Maklakov (r=0,93). A negative correlation between the value of the anteroposterior size of the eye and results transpalpebral tonometry (r=-0,47). Interpretation of intraocular pressure measurementresultsin children with congenital glaucoma should be based on the modified properties of the cornea in these patients.

congenital glaucoma, ophthalmometry in children