Normative measurements of the ocular globe position in relation to interzygomatic line, using magnetic resonance imaging among adults in Zaria, Nigeria

Aiyekomogbon, Joshua Oluwafemi; Chom, ND; Hamidu, Ahmed Umdagas; Rafindadi, Abdulmumini Hassan; Ibinaiye, Philip Oluleke; Igashi, Joseph Bako

doi:10.4103/1115-3474.187970

Cited by 7 publications

(12 citation statements)

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“…The normal interzygomatic distance lies between 90 mm and 109 mm. [82223] These values are similar to those noted in our population.…”

Section: Discussionsupporting

confidence: 90%

“…[8] Values measured by other authors vary from 6.5 mm in a Nigerian cohort, 9.4 mm in a Turkish population, and 6.5 mm or more behind the inter-zygomatic line in a Canadian population. [162223] In addition to the inherent genetic and racial differences, this result may be complicated by the variability in prevalence of myopia in these subgroups.…”

Section: Discussionmentioning

confidence: 99%

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Computed tomography imaging-based normative orbital measurement in Indian population

Gupta

Prabhakar

Yadav

et al. 2019

Indian J Ophthalmol

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Purpose: This study aims to evaluate normal orbital structures with nonenhanced computed tomography (NCCT) and determine normative data for the Indian population. Methods: CT images of the orbits of 100 patients were retrospectively reviewed on a work station to record the normative data of the orbits. Clinical details of all patients were reviewed to ensure that they did not have ocular/orbital diseases. Both axial and coronal images were utilized to record the data. Results: The mean age of the population evaluated was 34.07 years, with male to female ratio of 1.77. The average orbital index for the left orbit was 97 and for the right side was 103. The mean thickness of left inferior rectus, lateral rectus, medial rectus, and the superior rectus was 3.36 mm, 3.14 mm, 3.80 mm, and 3.75 mm, respectively. The right inferior rectus, lateral rectus, medial rectus, and the superior rectus measured 3.46 mm, 3.14 mm, 3.83 mm, and 3.78 mm, respectively. The optic nerve sheath complex diameter varied between 3.05 mm and 7.17 mm for the left eye and 3.05 mm and 7.0 mm for the right eye. Conclusion: The study provides normative data on various orbital structures in an Indian population. This data is likely to be useful for diagnosing various orbital pathologies and in planning surgical orbital procedures.

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“…The normal interzygomatic distance lies between 90 mm and 109 mm. [82223] These values are similar to those noted in our population.…”

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Computed tomography imaging-based normative orbital measurement in Indian population

Gupta

Prabhakar

Yadav

et al. 2019

Indian J Ophthalmol

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“…In the literature, the normal interzygomatic distance has been reported to lies between 9 and 109 mm. [ 6 13 21 24 ] Similar values were also seen in the present study, with the mean interzygomatic distance of 88.4 ± 9.09 [SD] mm, 89.76 ± 8.55 [SD] mm in males and 86.90 ± 9.49 [SD] mm in females.…”

Section: Discussionsupporting

confidence: 90%

“…In another study, Aiyekomogbon et al . [ 21 ] reported a value of 6.5 mm in a Nigerian cohort. Furthermore, Gupta et al .…”

Section: Discussionmentioning

confidence: 99%

Normative magnetic resonance imaging measurements of orbital structures in pediatric population of North-Eastern India: A retrospective cross-sectional study

Boruah

Dutta

Sarma

et al. 2021

Indian Journal of Ophthalmology

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Purpose: The people of Northeast India comprise mostly of Mongoloid descent with characteristic craniofacial features. The purpose of this study was to evaluate the normal orbital structures with MRI and determine normative data in the Northeast Indian pediatric population. Methods: MRI images of the 302 orbits of 151 pediatric patients below 16 years of age were retrospectively evaluated to measure the various orbital structures. Both axial and coronal MRI images were utilized for various orbital measurements. An independent sample t -test was done to compare various orbital data according to the sex and side. Linear regression was also done. Results: The mean age of the pediatric population was 9.64 ± 1.47 years with a male: Female ratio of 1.13:1. The mean interzygomatic line was 88.4 ± 9.09 mm and the interorbital line was 22.18 ± 3.62 mm. The mean thicknesses of medial, lateral, superior, and inferior recti muscles were 2.58 ± 0.46, 2.34 ± 0.42, 2.16 ± 0.40, and 2.53 ± 0.49 mm in males and 2.41 ± 0.41, 2.08 ± 0.34, 2.08 ± 0.46, and 2.46 ± 0.49 mm in females. The mean horizontal orbital, vertical orbital diameters, orbital index, mean volume of eyeball, and orbital cavity were 30.27 ± 2.97,3 7.06 ± 3.57, 122.58 ± 7.39, 4.63 ± 0.84, and 15.29 ± 3.52 in males, while 29.16 ± 3.23, 34.96 ± 3.99,119.96 ± 7.31, 4.49 ± 0.87, and 14.65 ± 3.47 in females, respectively. With an increase in age, the interzygomatic line ( r = 0.883, r 2 = 0.780; P < 0.0005), anterior medial interorbital line ( r = 0.808, r 2 = 0.652; P < 0.0005), mean volume of eyeball ( r = 0.915, r 2 = 0.838; P < 0.0005), orbital cavity ( r = 0.924, r 2 = 0.854; P < 0.0005), and distance between the optic nerve entry site ( r = 0.829, r 2 = 0.687; P < 0.0005) were increased. Conclusion: This study provides normative data of various orbital structures in a pediatric population and these data likely to be useful for diagnosing various pediatric orbital disorders and helps in the planning of various surgical procedures of orbits.

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“…4 Distance is measured between this line and the anterior (normal <21 mm) or posterior globe margin (normal <5mm). 5,6 There are also different methods to measure proptosis. Various instruments have been designed for clinical measurement of proptosis, ranging from a simple ruler to more precise instruments like hertel, naugle and leudde's exophthalmometers but hertel exophthalmometer which was designed in 1905 is most commonly used.…”

Section: Introductionmentioning

confidence: 99%

Unilateral Proptosis - A Diagnostic Dilemma

Yasin

Yaqub

Naqvi

et al. 2021

PAFMJ

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Objective: To study epidemiology, presentation and management of cases with unilateral proptosis presenting at a tertiary care hospital. Study Design: Case series. Place and Duration of Study: Armed Forces Institute of Ophthalmology, Rawalpindi Pakistan, from Jan 2016 to Dec 2017. Methodology: Retrospective analysis of hospital record of patients with unilateral proptosis was carried out. Data was entered and analyzed in SPSS version 22. Chi square test was used for statistical analysis. Results: Thirty-three cases of unilateral proptosis with a mean age of 41.79 ± 3.87 years were included in the study. Pain was the most common association. Proptosis was mild in 42.4%, moderate in 48.5% and severe in 9.1% cases. In 61% cases, diagnosis was made on excisional or incisional biopsy and on the basis of radio imaging in 39% cases. Most common cause of proptosis found was pleomorphic adenoma (12%). Patients with axial and non-axial proptosis were 48.5% and 51.5% respectively. Fourteen cases (42.5%) were managed surgically and 2 cases (6%) were observed. Total of 22 cases (67%) improved after treatment, 8 cases (24%) went into remission, 2 (6%) deteriorated, and 1 (3%) died in the study period. Conclusion: Unilateral proptosis is a diagnostic challenge. Pertinent history taking and detail examination is the key, but associated signs or symptoms not always point towards correct diagnosis. Tissue biopsy provides a conclusive diagnosis especially where radio imaging is doubtful.

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Normative measurements of the ocular globe position in relation to interzygomatic line, using magnetic resonance imaging among adults in Zaria, Nigeria

Cited by 7 publications

References 0 publications

Computed tomography imaging-based normative orbital measurement in Indian population

Computed tomography imaging-based normative orbital measurement in Indian population

Normative magnetic resonance imaging measurements of orbital structures in pediatric population of North-Eastern India: A retrospective cross-sectional study

Unilateral Proptosis - A Diagnostic Dilemma

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