Publications by authors named "Loudon S"

Article Synopsis
  • Trigonocephaly, a condition affecting the shape of the head, is linked to poorer visual outcomes in children, but its impact on orthoptic issues post-visual development is unclear.
  • A study assessed 78 non-syndromic trigonocephaly patients aged 8 and older, finding a significant prevalence of refractive errors and other visual abnormalities compared to healthy peers.
  • Results indicated trigonocephaly patients have a much higher risk for issues like hyperopia, amblyopia, and strabismus, suggesting the need for regular eye screenings and long-term monitoring by specialists.
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Article Synopsis
  • A study called the Early Glasses Study is looking at how wearing glasses early on can help prevent problems like amblyopia (lazy eye) and a condition called accommodative esotropia in young children.
  • They checked the eyes of 742 kids aged about 14 months and found that only a small number had high enough refractive errors to participate in the glasses test.
  • The results showed that while strabismus (crossed eyes) was common, very few kids had amblyopia, which suggests that this eye problem might develop later than what experts previously thought.
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Purpose: The improvement in visual acuity (VA) was determined during optical treatment in children with amblyopia before their participation in a randomised clinical trial comparing the effect of dichoptic video gaming using virtual reality goggles with occlusion therapy.

Methods: Children aged 4-12 years with an interocular VA difference ≥0.20 logMAR and an amblyogenic factor: strabismus <30Δ, ≥1.

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To determine the skeletal changes after midface surgery in patients with syndromic craniosynostosis who underwent Le Fort III (LFIII), monobloc (MB), or facial bipartition (FB). This was a retrospective study including 75 patients: 33 treated by LFIII, 29 by MB, and 13 by FB. Twenty-five had a diagnosis of Apert, 39 Crouzon, and 11 craniofrontonasal syndrome.

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Background: In patients with craniosynostosis, the authors evaluated the diagnostic accuracy of fundoscopy and optical coherence tomography (OCT) to detect intracranial hypertension (ICH), the time course of retinal thickness after treatment of ICH, and the relationship between high hyperopia (HH) and fundoscopy/OCT scan findings.

Methods: Patients with syndromic, multisuture, unicoronal, unilambdoid, or sagittal synostosis visiting the authors' national center were included in this longitudinal cohort study and formed a consecutive series. Retinal layers on OCT, OCT fundus images, and fundoscopy results were evaluated.

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(1) Background: Non-syndromic unicoronal craniosynostosis (UCS) is associated with a high prevalence of ocular anomalies. Currently, the etiology of this association remains obscure, however, it is presumed to be primarily attributed to their orbital malformations and/or secondary to craniofacial surgery. We assessed pre-operative ophthalmological examinations of non-syndromic UCS patients and compared them with their postoperative outcomes and long-term follow-up.

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Background: Metopic synostosis patients have a high prevalence of orthoptic anomalies, including hyperopia, astigmatism, and amblyopia. We hypothesized altered orbital anatomy contributes to suboptimal visual outcomes by adversely affecting eye anatomy and growth from early life onward. Therefore, we aimed to investigate eye and orbital anatomy in metopic synostosis.

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(1) Background: Patients with unicoronal craniosynostosis (UCS) often show torticollis which can result from either an ocular cause or contraction of the sternocleidomastoid muscle. For clinicians, it is crucial to know the prevalence of ocular torticollis (OT) to ensure appropriate referral for treatment. Furthermore, associated ophthalmic features with OT in these patients are scarcely described.

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(1) Background: Orbital and midface malformations occur in multiple craniofacial disorders. Depending on the deformity, surgical corrections include orbital box osteotomy (OBO), Le Fort III (LFIII), monobloc (MB), and facial bipartition (FB). The aim of this study was to determine the effect of these procedures on ocular outcomes.

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Purpose: To compare the effectiveness and efficiency of supervised dichoptic action-videogame play to occlusion therapy in children with amblyopia.

Methods: Newly diagnosed children with amblyopia aged 4-12 years were recruited, excluding strabismus >30PD. After 16 weeks of refractive adaptation children were randomized to gaming 1 h/week supervised by the researcher, or electronically monitored occlusion 2 h/day.

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Purpose: To explore parents' experiences, preferences and information needs when either patching treatment or dichoptic action video gaming is used as an amblyopia treatment for their child.

Methods: A qualitative study was carried out on parents whose newly diagnosed amblyopic children participated in a randomised controlled trial (RCT) comparing the effects of dichoptic action video gaming versus patching. A purposive heterogenic sample was selected for an additional interview after the study period.

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Background: Early risk stratification for developing retinopathy of prematurity (ROP) is essential for tailoring screening strategies and preventing abnormal retinal development. This study aims to examine the ability of physiological data during the first postnatal month to distinguish preterm infants with and without ROP requiring laser treatment.

Methods: In this cohort study, preterm infants with a gestational age <32 weeks and/or birth weight <1500 g, who were screened for ROP were included.

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The study aimed at evaluating the feasibility of Eye Movement Pediatric Perimetry (EMPP) among children in detecting Visual Field Defects (VFDs) associated with Intracranial Lesions (IL). Healthy controls (n = 35) and patients diagnosed with IL (n = 19) underwent a comprehensive clinical evaluation followed by a Goldmann Visual Field (GVF) and a customised EMPP protocol. During EMPP, all the participants were encouraged to fixate on a central target and initiate Saccadic Eye Movement (SEM) responses towards randomly appearing peripheral stimuli.

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Article Synopsis
  • The study investigates the relationship between skull growth and the development of papilledema in patients who underwent surgery for sagittal synostosis.
  • Researchers analyzed occipitofrontal circumference (OFC) measurements at three time points, finding an initial decline in skull growth followed by stabilization in the long-term.
  • Results indicated that smaller OFC measurements were significantly linked to a higher likelihood of developing papilledema, with specific thresholds identified for monitoring patients post-surgery.
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Purpose: To obtain pediatric normative reference values and determine whether optical coherence tomography (OCT) corresponds better with clinical signs of intracranial hypertension (ICH) compared to the traditional screening method fundoscopy in a large cohort of one type of single suture craniosynostosis.

Methods: Control subjects without optic nerve diseases and isolated sagittal synostosis patients aged 3-10 years who underwent fundoscopy and OCT were included in this prospective cohort study. Normative reference values were obtained through bootstrap analysis.

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Article Synopsis
  • High myopia is a vision problem where people need very strong glasses (more than -6 diopters) to see clearly, and it's hard to find out the exact genetic cause because there are many types.
  • Researchers studied European patients with high myopia using a special DNA test called whole exome sequencing (WES) to look for genetic issues.
  • Out of 113 patients, 20% were found to have a genetic cause for their vision problems, and the genes involved were linked to eye and connective tissue diseases.
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Background: The aim of this study was to describe the ophthalmic abnormalities and their prevalence in craniosynostosis prior to craniofacial surgery.

Methods: A systematic search was conducted on Medline OVID, Embase, Cochrane, Google Scholar, Web of Science Core Collection. Inclusion criteria were English papers, children aged <18 years with non-syndromic and syndromic craniosynostosis, case reports, case series, and case-control studies.

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Background: Treacher Collins syndrome (TCS) is a rare craniofacial disorder characterized by bilateral hypoplasia of facial structures and periorbital, ocular, and adnexal anomalies. The purpose of this multicenter study was to report the prevalence of ocular and adnexal anomalies in TCS and to identify patients at risk for visual impairment.

Methods: The medical records of patients seen at four craniofacial centers were reviewed retrospectively.

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This study describes the clinical spectrum and genetic background of high myopia caused by mutations in the ARR3 gene. We performed an observational case series of three multigenerational families with high myopia (SER≤-6D), from the departments of Clinical Genetics and Ophthalmology of a tertiary Dutch hospital. Whole-exome sequencing (WES) with a vision-related gene panel was performed, followed by a full open exome sequencing.

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Children with early brain damage or dysfunction are at risk of developing cerebral visual impairment (CVI), including visual processing dysfunctions (VPD), which currently remain largely undetected until school age. Our aim was to systematically screen for possible VPD in children born very or extremely preterm from 1 to 2 years corrected age (CA) and to evaluate the effectiveness of early referral. We included = 48 children born < 30 weeks from 1 year CA.

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Purpose: This study is the first to evaluate the prevalence of retinal thinning and the correlation with papilledema and visual acuity (VA) in a large population with craniosynostosis.

Design: Prospective clinical cohort study.

Methods: All and complex patients syndromic and complex with craniosynostosis who visited the only national referral center between 2018 and 2020 were included.

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Purpose: In an ongoing randomised clinical trial comparing dichoptic VR video games with patching for amblyopia, we evaluated any potential barriers to successful use of this novel amblyopia treatment method.

Methods: From December 2017, all newly diagnosed amblyopic children were recruited. Excluded were children under age 4 and patients with strabismus exceeding 30PD.

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The aim of this multicentre retrospective cohort study was to describe and categorize the types of ocular and adnexal anomalies seen in patients with craniofacial microsomia (CFM) and to determine their prevalence. In addition, the relationship between the OMENS-Plus and Pruzansky-Kaban classification for each patient and the presence of ocular anomalies was investigated. A total of 881 patients with CFM from four different craniofacial centres were included.

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Article Synopsis
  • Atropine is identified as the most effective treatment for slowing down progressive myopia in children and this study assesses its effectiveness over a 3-year clinical period.
  • The study involved 124 children, with adjustments made to the atropine dosage based on individual responses to treatment, highlighting a significant portion of participants remained on the medication throughout the study.
  • The results indicate that those treated with atropine 0.5% experienced reduced myopia progression, supporting its use as a viable option for managing high myopia risk in children.
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