Corneal Structural Changes in Congenital Glaucoma.

OBJECTIVE: To identify corneal structure differences on quantitative high-frequency ultrasound biomicroscopy (UBM) among subjects with congenital glaucoma compared with controls. METHODS: This prospective case-control study evaluated 180 UBM images from 44 eyes of 30 subjects (18 control and 12 glaucoma, mean age 5.2±8.0 years, range 0.2-25.8 years) enrolled in the Pediatric Anterior Segment Imaging and Innovation Study (PASIIS). ImageJ was used to quantify a comprehensive set of corneal structures according to 21 quantitative parameters. Statistical analysis compared corneal measurements in glaucoma subtypes and age-matched controls with significance testing and mixed effects models. RESULTS: Significant differences between congenital glaucoma cases and controls were identified in 16 of 21 measured parameters including angle-to-angle, central and peripheral corneal thicknesses, scleral integrated pixel density, anterior corneal radius of curvature, and posterior corneal radius of curvature. Eight parameters differed significantly between primary congenital glaucoma and glaucoma following congenital cataract surgery. CONCLUSION: Multiple measurable corneal structural differences exist between congenital glaucoma and control eyes, and between primary and secondary congenital glaucoma, including but not limited to corneal width and thickness. The structural differences can be quantified from UBM image analysis. Further studies are needed to determine whether corneal features associated with glaucoma can be used to diagnose or monitor progression of congenital glaucoma.

Semiautomated Assessment of Anterior Segment Structures in Pediatric Glaucoma Using Quantitative Ultrasound Biomicroscopy.

The study was a prospective observational study comparing semiautomated to manual quantitative ultrasound biomicroscopy image analysis among 82 images from 41 eyes of 32 subjects (21 controls and 11 glaucoma) enrolled in the Pediatric Anterior Segment Imaging Innovation Study. Intraclass correlation coefficients and correlation coefficients were >0.8 for all parameters, and comparison of respective analysis speed was 7 times faster for the semiautomated method compared with manual image quantification.

Periocular Facial Scald Burns in Children: Is Ophthalmology Consultation Necessary?

OBJECTIVES: Criteria that predict the need for ocular injury treatment in children who suffer periocular facial scald burns are not known. The purpose of this study was to evaluate the incidence and management of ocular injuries among children sustaining facial scald burns and to determine predictors of injuries requiring additional treatment. METHODS: Children treated at a burn center with periocular facial scald burns were analyzed. Patient and injury profiles were compared between those evaluated and not evaluated by an ophthalmologist. Factors associated with an ocular injury requiring treatment were determined, and treatment differences before and after ophthalmology consultation were evaluated. RESULTS: Seventy-three children with facial scald burns were identified, none with a full-thickness injury. Thirteen children had ocular findings on examination including corneal abrasion, conjunctivitis, scleral burn, and chemosis of the conjunctiva. Twenty-three patients received erythromycin ointment, only 8 of whom had a documented ocular injury. Children seen by an ophthalmologist (n = 24) more often had a positive finding on examination (37.5% vs 8.2%, P = 0.007) and received treatment (66.7% vs 14.3%, P < 0.001). Only 4 patients had modification in their treatment plan after consultation, 3 of whom were started on treatment despite not having a positive finding on examination. CONCLUSIONS: Ocular injury after periocular facial scald burns is an infrequent finding. Among children with partial-thickness periocular facial scald burns, initial evaluation and treatment without ophthalmology consultation are appropriate. Ophthalmic antibiotic ointment is an appropriate initial treatment in most symptomatic patients, with ophthalmologic consultation being limited to children without symptomatic improvement.

A rare case of pediatric Tolosa-Hunt syndrome.

Tolosa-Hunt syndrome is a rare disorder characterized by granulomatous inflammation involving the cavernous sinus, superior orbital fissure, and/or orbit with no additional underlying cause. Tolosa-Hunt syndrome most often presents with painful ophthalmoplegia involving one or multiple cranial nerves. Here we report the case of an 8-year-old girl who presented, atypically, without the hallmark finding of pain. This case of pediatric Tolosa-Hunt syndrome is the only reported example to date lacking what is considered its pathognomonic feature and thus brings to light the clinical variability of this already inconspicuous disorder.

Pediatric Corneal Structural Development During Childhood Characterized by Ultrasound Biomicroscopy.

PURPOSE: To quantitatively describe the structural corneal changes from infancy to early adulthood using ultrasound biomicroscopy. METHODS: In this prospective study, 168 ultrasound biomicroscopy images were obtained from 24 healthy eyes of 24 patients who consented and enrolled in the Pediatric Anterior Segment Imaging Innovation Study. Their ages ranged from birth to 26 years. An established ultrasound biomicroscopy imaging protocol including seven views of one eye per patient were obtained and measured using ImageJ software (National Institutes of Health). Twelve corneal structural parameters were measured. Means were compared between younger and older groups. RESULTS: Among the 12 measured structures, 5 demonstrated statistically significant differences (P < .05) between patients younger than 1 year and patients older than 1 year. The mean values for corneal cross-sectional width and length, central corneal thickness, and radii of curvature (anterior and posterior) were significantly different in patients younger than 1 year. Curvature and limbus-to-limbus dimensions changed more dramatically than thickness and tissue density. When comparing the youngest to oldest subgroups, anterior curvature flattened (6.14 to 7.55 radius), posterior curvature flattened (5.53 to 6.72 radius), angle-to-angle distance increased (8.93 to 11.40 mm), and endothelial cross-sectional distance increased (10.63 to 13.61 mm). CONCLUSIONS: Pediatric corneal structures change with age. The most significant changes occur in the first months of life, with additional changes later in childhood. This study further demonstrates the importance of age in pediatric corneal imaging analysis. [J Pediatr Ophthalmol Strabismus. 2020;57(4):238-245.].

Optical coherence tomography to monitor vigabatrin toxicity in children.

PURPOSE: The antiepileptic drug vigabatrin is known to cause permanent loss of vision. Both visual field testing and electroretinogram are used to detect retinal damage. Adult data on optical coherence tomography (OCT) shows that retinal nerve fiber layer (RNFL) thinning may be an early indicator of vigabatrin-induced retinal toxicity. The purpose of this study was to investigate whether OCT can detect early vigabatrin-induced retinal toxicity in children. METHODS: Pediatric patients (≤18 years of age) requiring vigabatrin for seizure control who were followed at our institution were invited to participate. Patients were examined according to manufacturer guidelines, with most examinations taking place under general anesthesia. RNFL thickness was measured by OCT (Stratus Model 3000, Zeiss) and compared to total cumulative dose of vigabatrin. In most cases, indirect ophthalmoscopy, fundus photography, and electroretinography were also performed. RESULTS: OCT and complete dosing data was available for 19 patients. Patients with tuberous sclerosis (TS, n = 12) received higher cumulative doses (mean, 1463 g) than non-TS patients (mean, 351 g, P = 0.044). RNFL thinning was detected in the nasal (P < 0.01), superior (P < 0.01), and inferior (P < 0.05) quadrants in patients with TS, particularly once cumulative dose exceeded 1500 g. CONCLUSIONS: In our study population of patients with TS, higher cumulative doses of vigabatrin were associated with RNFL thinning in the nasal, superior, and inferior quadrants. These findings were pronounced once cumulative dose exceeded 1500 g. This pattern of RNFL thinning is similar to what has been shown in adult patients taking vigabatrin.