Faryal Asmat, Javed Ahmad Khan, Hiba Hafeez, Muhammad Ibrahim, Maria Jan, Kiran Fatima Farooq


Background: The orbital region in children may be involved in various pathologies and knowledge of normal anatomy is necessary for diagnosis and management purposes. The aim of this study was to assess the measurements of extra ocular muscles, optic nerve, eye globe and globe position in children less than 5 years age regarding any difference between the two sides and with the increase in age.

Materials & Methods: A retrospective observational study was conducted at Fauji Foundation Hospital Rawalpindi from 1st April to 30th May 2023. Previous MRIs were reviewed using Picture archiving and communication system (PACS) and measurements were taken on Constructive interference in steady state MRI sequence (CISS). Patients with abnormal findings in the orbits and children above 5 years were excluded from the study. The patients were divided into three groups based on their ages, Group-1 (0-20 months), Group-2 (20-40 months) and Group-3 (40-60 months). Diameters of extra ocular muscles, width of the optic nerve, distance from the inter-zygomatic line to the posterior margin of the globe and globe diameter were taken. The data was entered and analyzed using SPSS version 21.

Results: Total 186 patients were included in the study, out of which 107 (57.5%) were male and 79 (42.5%) were female. Group 1 included 49 patients (26.3 %), Group 2 included 87 patients (46.8 %) and Group 3 included 50 patients (26.9 %). In our study minimal increase was noted with increase in age by evaluating mean measurements, however most of them were statistically insignificant (p>0.05), except the Anteroposterior and Transverse diameters of the globe which were statistically significant (p<0.05).

Conclusion: In children less than 5 years age there was steady but minimal increase in orbital contents measurements. Also our study will help ophthalmologists of this country in precise assessment of sizes of extra ocular muscles, optic nerve size, globe position and globe size, because this is the first one study in this regard.


Magnetic resonance imaging; Orbital structures; Extra ocular muscles; Diameter; Eye; Ophthalmologist.

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