Henle fiber layer thickening and deficits in objective retinal function in participants with a history of multiple traumatic brain injuries.

Introduction: This study tested whether multiple traumatic brain injuries (TBIs) alter the structure of the Henle fiber layer (HFL) and degrade cell-specific function in the retinas of human participants.

Methods: A cohort of case participants with multiple TBIs and a cohort of pair-matched control participants were prospectively recruited. Directional optical coherence tomography and scanning laser polarimetry measured HFL thickness and phase retardation, respectively.

Prescribing patterns for paediatric hyperopia among paediatric eye care providers.

Purpose: To survey paediatric eye care providers to identify current patterns of prescribing for hyperopia.

Methods: Paediatric eye care providers were invited, via email, to participate in a survey to evaluate current age-based refractive error prescribing practices. Questions were designed to determine which factors may influence the survey participant's prescribing pattern (e.

Structure and function of retinal ganglion cells in subjects with a history of repeated traumatic brain injury.

This study tested whether repeated traumatic brain injuries (TBIs) alter the objective structure or the objective function of retinal ganglion cells (RGCs) in human subjects recruited from an optometry clinic. Case subjects ( = 25) with a history of repeated TBIs (4.12 ± 2.

Case Series: Periodic Accommodative Fluctuations after Concussion.

Significance: This is the first report recording an accommodative disorder after concussion characterized by periodic moderately sized myopic refractive error fluctuations without measurable other features of spasm of the near reflex.

Purpose: Objectively document a class of accommodative dysfunction that may be related to concussion.

Case Reports: Case 1 involved two sports-related concussions 2 months apart with symptoms of headache and variable blur.

The Influence of Binocular Vision Symptoms on Computerized Neurocognitive Testing of Adolescents With Concussion.

Binocular vision disorders are commonly found postconcussion and associated with high symptom burden. We investigated the relationship between binocular vision symptoms and neurocognitive test performance. Thirty-four adolescents with concussion and 18 without concussion were assessed for cognitive performance using the CogState Brief Battery.

Observer-perceived light aversion behaviour in photophobic subjects with traumatic brain injury.

Background: Photophobia is a common sequela of traumatic brain injury (TBI). Diagnostic tools for this debilitating condition are lacking. This investigation sought to determine whether masked observers can distinguish subjects with TBI-associated photophobia from matched controls based on video recordings of their ocular responses to light stimulation.

Blue and Red Light-Evoked Pupil Responses in Photophobic Subjects with TBI.

Purpose: Photophobia is a common symptom in individuals suffering from traumatic brain injury (TBI). Recent evidence has implicated blue light-sensitive intrinsically photosensitive retinal ganglion cells (ipRGCs) in contributing to the neural circuitry mediating photophobia in migraine sufferers. The goal of this work is to test the hypothesis that ipRGC function is altered in TBI patients with photophobia by assessing pupillary responses to blue and red light.