Pediatric ocular motor cranial nerve palsy: Demographics and etiological profile

Purpose:The aim of this study was to describe epidemiological and clinical characteristics of pediatric ocular motor cranial nerve palsy.Methods:This was a retrospective record-based study, carried out at a tertiary eye care hospital in India, between January 2011 and January 2015 and included patients up to 16 years of age at the time of presentation, diagnosed with third, fourth, sixth nerve palsy or a combination of these with other cranial nerve palsy. Data analyzed included demographic details, etiologies, presence or absence of amblyopia, relevant investigations, and management.Results:A total of 90 cases were included in the study. Eighty patients (88.88%) presented with isolated nerve palsy. Forty-three patients (47.77%) had congenital nerve palsy. The most common nerve involved was third (n = 35, 38.88%) followed by sixth (n = 23, 25.55%) and fourth nerve (n = 22, 24.44%). Most common cause of third and fourth cranial nerve palsy was congenital (n = 18, 51.42% and n = 17, 77.30%, respectively), while it was trauma for the sixth nerve (n = 7, 30.40%). Amblyopia was most frequently associated with third cranial nerve palsy (n = 27, 77.14%). The radio-imaging yield was maximum (n = 7, 70%) for combined cranial nerve palsy. Overall 44 (48.88%) patients were managed conservatively, while 46 (51.11%) patients needed squint with or without ptosis surgery.Conclusion:The most common ocular motor cranial nerve involved in the pediatric population was the third cranial nerve, and it was found to be the most amblyogenic in this age group. The neuroimaging yield was maximum for combined cranial nerve palsy. The most common conservatively managed nerve palsy in this study group was the fourth nerve palsy.     

头颅外伤患者的眼运动神经麻痹(英文)

目的:了解头颅外伤患者眼运动神经麻痹的情况。方法:收集2006-03/2006-09 Shahid Rahnemon医院神经外科收治的300名头颅外伤患者的资料,包括眼科检查和调查问答,采用SPSS软件卡方和F检验进行数据分析。结果:300例患者中242例为男性(81. 1% ), 58例为女性(18.9% ),年龄为1~87(平均46)岁。意外跌伤是头部外伤最常见的原因,共247例患者(82. 3% )因此致伤;大多数患者的GCS得分为13~15(82.3% )。最多见的颅脑外伤为硬膜下腔、蛛网膜下腔出血。滑车神经或外展神经麻痹(28.6% )、其他眼运动神经麻痹或同时两处眼运动神经麻痹(常见第3颅神经和第4颅神经麻痹,14.3% )是最常出现的情况。结论:虽然头颅外伤同时出现颅神经麻痹的几率较小,但是在急诊时应根据情况进行神经眼科检查。     

Ocular manifestations of head injury: a clinical study

AIM: This prospective study aimed to clinically correlate the various ocular findings with the neurological status in cases of closed head injury. METHODS: A total of 200 consecutive cases of closed head injury admitted to a major teaching hospital underwent a thorough ophthalmic assessment. The Glasgow coma scale (GCS) and the Revised trauma score (RTS) were applied to grade the severity of injury and assess the prognosis. Kendall's tau-b and Fisher's exact test were used in the analysis. RESULTS: The main causes of head injury were road traffic accidents 52.5% followed by assaults in 34%. Ocular involvement was found in 167(83.5%) cases. These included corneal and scleral tears in 2%, subconjunctival haemorrhage or ecchymosis in 46%, orbital fractures 12%, pupillary involvement 6.5%, papilloedema 5.5%, intraocular trauma 5.5%, proptosis 3%, lateral rectus palsy 2%, lacrimal gland prolapse 1%, and optic nerve trauma 0.5%. All 21 patients (10.5%) who died had eye involvement. In all, 150 cases (75%) with a RTS of 12 had a good prognosis. Of these 124 (82.6%) had ocular involvement of no neurological significance. CONCLUSIONS: Although sophisticated imaging techniques are available to localize lesions, early ophthalmic assessment in correlation with the GCS aids in prognosticating outcomes. Pupillary involvement, papilloedema, and ocular motor paresis pointed to a more severe head injury. To our knowledge, this is the only prospective study recording ocular findings in the first few hours and attempting a correlation with the final outcome.     

Ocular manifestations of head injury and incidence of post-traumatic ocular motor nerve involvement in cases of head injury: a clinical review

As the eyes are in close proximity to the skull, they can get simultaneously affected in head injuries. This close association warrants careful ocular examination in all cases of head injury. This is a prospective non-randomized analytical study to evaluate various ocular manifestations in cases of head injury with special reference to ocular motor nerve involvement, correlation between pupillary changes, and survival. A total of 1,184 patients with head injury were screened for ocular manifestations. This study comprises 594 patients with ocular manifestations of head injury. All the relevant data was compiled and analyzed as per proforma. Ocular manifestations were evaluated in each patient and appropriate investigations were carried out. Patients with ocular morbidity were analyzed for age, sex, mode of injury, Glasgow Coma Score, and associated injuries in addition to ophthalmic and neurosurgical evaluations. Of the 594 patients, 81.6 % were male and 18.4 % were female, with a male-to-female ratio of 4:1. The major cause of head injury was road traffic accidents (70.37 %). The most common age group involved was, 21–40-year-olds (67.40 %). Out of 594 patients, ecchymosis was found in 51.85 %, subconjunctival hemorrhage in 44.44 %, lid edema in 41.48 %, lacerated wound in 22.59 %, pupillary involvement in 21.04 %, ptosis in 6.73 %, cranial nerve palsy in 11.62 %, orbital fractures in 10.44 %, optic nerve trauma in 4.04 %, and exposure keratitis in 4.21 %. Patients with bilaterally dilated or pinpoint fixed pupils had a 10 times higher risk of mortality than patients without pupillary involvement. Third nerve involvement was seen 2.85 times more frequently in frontal and parietal region injuries compared to other sites of injury. The involvement of the sixth nerve occurred 4.6 times more frequently in parietal region injuries compared to other sites of injury.     

Ocular motor score a novel clinical approach to evaluating ocular motor function in children

Purpose: Ocular motility disturbances are common in a number of neuropaediatric and neurometabolic disorders. Assessment of ocular motor function can be a source of information for diagnosis and follow‐up of these patients. Aim: To evaluate a new clinical ocular motor function test: ocular motor score (OMS) and provide reference values in children and young adults without known ocular or neurological disorders. Material and Methods: A total of 233 children and young adults, 103 males and 130 females between the ages of 6 months and 19 years, were assessed according to a specific OMS protocol. They were divided into four different age groups: 0.5–3, 4–6, 7–10 and 11–19 years. The OMS protocol consists of 15 different subtests evaluating ocular motor function, and a total score of minimum 0 up to max 15 can be obtained: the minimum score, 0, is considered normal while 1 represents an abnormal function. Results: The median OMS in the whole reference group was 0.3 (range 0–4.8). The median OMS in the different age groups, starting with the youngest, was: 0.9 (range 0.3–4.8), 0.3 (range 0–3.4), 0.3 (range 0–2.3) and 0 (range 0–3.5), respectively. The youngest subjects, aged 0.5–3, showed a significantly higher total OMS compared with the other age groups (p < 0.001). Conclusion: This study provides reference values for the OMS test in a population aged 0.5–19 years. The test may be valuable as a screening tool for identification and follow‐up of ocular motor dysfunction in children and young adults.     

Ocular non-Hodgkin's lymphoma: a clinical study of nine cases

BACKGROUND—Primary oculocerebral large cell malignant non-Hodgkin's lymphoma, formerly called ocular reticulum cell sarcoma, runs a uniformly fatal course. Once the central nervous system (CNS) is involved, survival without treatment is very limited. Although treatment does not substantially improve the long term survival, it provides short term improvement in these patients.
METHODS—The charts of all patients with ocular involvement of non-Hodgkin's lymphoma followed during the period 1984-93 were reviewed. The diagnosis of non-Hodgkin's lymphoma was made by different diagnostic approaches: CNS biopsy, anterior chamber tap, vitrectomy, haematology, and necropsy.
RESULTS—Eight patients had oculocerebral large cell and one had small cell non-Hodgkin's lymphoma. Five patients with pure ocular localisation had initially received steroid treatment for intermediate uveitis. First diagnosis was made on CNS biopsy in three, anterior chamber tap in one, vitreous aspirate in three, haematology in one, and necropsy in one case.
CONCLUSION—Ocular non-Hodgkin's lymphoma is a difficult diagnosis. Vitrectomy allows cytological diagnosis in most but not all cases. When no treatment is given, patients survive for only a few weeks once the CNS is involved. Although the disease is eventually fatal, treatment by means of radiotherapy, steroid administration, and vitrectomy can allow these patients to lead a normal professional and social life during the years between recurrences.

     

Partial third cranial nerve palsy: clinical characteristics and surgical management

PurposeIncomplete recovery from injury to the third cranial nerve results in ocular misalignment and associated diplopia. Our aim in this study was to describe and evaluate strabismus surgery strategies aimed at restoring functional, single binocular vision in this population.DesignRetrospective review.ParticipantsWe studied 12 adult patients with acquired partial third cranial nerve palsy who underwent strabismus surgery.MethodsThe 12 consecutive patients with residual third nerve palsy were selected from among the patients seen between 2000 and 2010 in the clinical practice of 1 strabismologist (M.F.). Complete pre- and postoperative ophthalmologic and orthoptic examinations were performed in each patient. The patients presented with isolated hypotropias (n = 7) and exohypotropias (n = 5). Strabismus surgery included: contralateral superior rectus recession, ipsilateral inferior rectus recession, vertical transposition of horizontal recti, horizontal rectus muscle surgery, or combined horizontal and vertical muscle surgery. Complete surgical success was defined as postoperative alignment within 5 prism diopters (PD) of orthotropia and the absence of diplopia in functional positions of gaze. The average follow-up was 23 months (range, 7 to 81 months).ResultsThe mean preoperative vertical and horizontal deviations were 19 PD hypotropia (8–40 PD) and 19 PD exotropia (6–40 PD), respectively. The mean postoperative deviations were 2 PD hypotropia (0–8 PD) and 1 PD exotropia (0–6 PD). Complete surgical success was achieved in 7 of 12 patients. Partial success was attained in 5 of 12 patients, who experienced significant improvement but required postoperative use of a prism.ConclusionsThis study indicates that patients with incomplete third cranial nerve paralysis may enjoy good functional and cosmetic outcomes with strabismus surgery.     

Prevalence of ocular motor cranial nerve palsy and associations following stroke

Aim

Occurrence of ocular motor cranial nerve palsies (OMCNP), following stroke, has not been reported in relation to the type of OMCNP seen and in relation to brain area affected by stroke. The aim of this study was to identify all patients referred with suspected visual impairment to establish the presence and type of OMCNP.

Methods

Prospective, observation study with standardised referral and assessment forms across 20 sites. Visual assessment included visual acuity measurement, visual field assessment, ocular alignment, and movement and visual inattention assessment. Multicentre ethics approval and informed patient consent was obtained.

Results

In total, 915 patients were recruited with mean age of 69.18 years (SD 14.19). Altogether, 498 patients (54%) were diagnosed with ocular motility abnormalities. Of these, 89 patients (18%) had OMCNP. Unilateral third nerve palsy was present in 23 patients (26%), fourth nerve palsy in 14 patients (16%), and sixth nerve palsy in 52 patients (58%). Out of these, 44 patients had isolated OMCNP and 45 had OMCNP combined with other ocular motility abnormalities. Location of stroke was reported mainly in cerebellum, brain stem, thalamus, and internal and external capsules. Treatment was provided for each case including prisms, occlusion, typoscope, scanning exercises, and refraction.

Conclusions

OMCNP account for 18% of eye movement abnormalities in this stroke sub-population. Sixth CNP was most common, followed by third and fourth CNP. Half were isolated and half combined with other eye movement abnormality. Most were treated with prisms or occlusion. The reported brain area affected by stroke was typically the cerebellum, brain stem, and diencephalic structures.     

动眼神经麻痹临床特征及病因分析——单中心研究

目的总结首诊眼科的动眼神经麻痹患者的临床特征及病因。方法单中心病例回顾性分析。收集2013年5月～2021年8月间复旦大学附属眼耳鼻喉科医院神经眼科就诊及转诊诊断为动眼神经麻痹者资料,对其人口学特征、发病特征、临床及影像学表现、病因以及转归进行分析。结果 143例确诊为动眼神经麻痹患者,其中男性74例、女性69例;平均年龄为(45.2±20.6)岁(3～89岁);平均病程为(2.9±7.6)年。单纯性动眼神经麻痹110例(76.9%),合并其他脑神经及神经系统疾病的33例(23.1%)。病因依次为外伤(23例,16%)、炎症(23例,16%)、缺血(21例,14.7%)、肿瘤(20例,14.0%)及动脉瘤/动静脉瘘(18例,12.6%)等。其他病因包括核性、放射损伤及医源性等。少见病因包括周期性发作性动眼神经麻痹伴痉挛发作、神经肌强直等。2例患者病因不明。81例患者预后良好,后无明显上睑下垂及复视。结论动眼神经麻痹是导致上睑下垂及复视的重要疾患,老年人群中缺血性占比高;动脉瘤/动静脉瘘虽然仅占12.6%,但危及生命,为神经眼科急症。     

A new interpretation and quantitative method for diplopia test: 304 cases of ocular motor nerve palsy for clinical test and verify

We introduce a new interpretation and quantitative method for computerized diplopia test. By comparing this new method to the Hess screen test, we validate its applicability among 304 patients with ocular motor nerve palsy. This new method shows great assistant value as the Hess screen test in making accurate diagnosis and quantitative evaluation the severity of diplopia. Furthermore, it is more convenient and suitable for daily clinical use.     

Ocular rotation axes during dynamic Bielschowsky head-tilt testing in unilateral trochlear nerve palsy

PURPOSE: To explain the positive Bielschowsky head-tilt (BHT) sign in unilateral trochlear nerve palsy (uTNP) by the kinematics of three-dimensional eye rotations. METHODS: Twelve patients with uTNP monocularly fixed on targets on a Hess screen were oscillated (+/- 35 degrees, 0.3 Hz) about the roll axis on a motorized turntable (dynamic BHT). Three-dimensional eye movements were recorded with dual search coils. Normal data were collected from 11 healthy subjects. RESULTS: The rotation axis of the viewing paretic or unaffected eye was nearly parallel to the line of sight. The rotation axis of the covered fellow eye, however, was tilted inward relative to the other axis. This convergence of axes increased with gaze toward the unaffected side. Over entire cycles of head roll, the rotation axis of either eye remained relatively stable in both the viewing and covered conditions. CONCLUSIONS: In patients with uTNP, circular gaze trajectories of the covered paretic or unaffected eye during dynamic BHT are a direct consequence of the nasal deviation of the rotation axis from the line of sight. This, in turn, is a geometrical result of decreased force by the superior oblique muscle (SO) of the covered paretic eye or, according to Hering's law, increased force parallel to the paretic SO in the covered unaffected eye. The horizontal incomitance of rotation axes along horizontal eye positions can be explained by the same mechanism.