Orbital Development as a Function of Age in Indigenous North American Skeletons

Osaki, Tammy H.; Fay, Aaron; Mehta, Manisha; Nallasamy, Nambi; Waner, Milton; Castro, Dawn K. De

doi:10.1097/iop.0b013e3182831c49

Cited by 11 publications

(2 citation statements)

References 31 publications

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“…Previous studies have explored the structure of the human orbits and its relationship with demographic and clinical parameters. Notable variability was found among different ethnic groups [11][12][13] and it was actually reported that orbital regions might display the greatest variation among facial measurements in both sexes [14]. Gender is another significant and independent factor of orbital and eyeball dimensions as reported in the literature [15][16][17], which also reflects the greater skull dimensions in men compared to women [18].…”

Section: Discussionmentioning

confidence: 99%

Quantification of effective orbital volume and its association with axial length of the eye. A 3D-MRI study

Bontzos

Papadaki

Mazonakis

et al. 2019

rjo

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Objective: To measure the effective orbital volume (EOV) from magnetic resonance images, and investigate its relationship with axial length (AL) in those parameters. Methods: Cross-sectional, 3D-MRI study. 54 eyes of 54 patients (25 males) were included in this work. Patient weight, height and head circumference were also measured. Orbital and eyeball volumes were calculated after image segmentation. The difference between those values volume was assessed, estimating the EOV for each eye. Results: Mean eyeball volume was 7.83 ± 2.27 mm 3 , mean orbital volume 26.81 ± 0.59 mm 3 and EOV 21.64 ± 0.19 mm 3 . The orbital volume was significantly higher in the male group (Wilcoxon signed-rank tests Z=-1.51, p<0.001; Z=-3.57, p<0.001 respectively). EOV was significantly correlated with AL in both males (r=-0.71, p<0.001) and females (r=-0.73, p<0.001), whereas it was also significantly associated with patient height (r=0.261, p=0.03). Associations between EOV and other age, axial and anthropometric characteristics were not statistically significant. Conclusions: Findings of this study could be of valuable importance in various clinical situations in which quantification of orbital volume is needed, such as orbital decompression in Graves' orbitopathy, volume restoration in orbital fractures or other orbital reconstructive surgery. In surgical interventions, clinical relationships should be carefully taken under consideration to avoid iatrogenic injury.

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Section: Discussionmentioning

confidence: 99%

Quantification of effective orbital volume and its association with axial length of the eye. A 3D-MRI study

Bontzos

Papadaki

Mazonakis

et al. 2019

rjo

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show abstract

“…According to our findings, both TB and BB groups showed a slight increment of the orbital volume at T2 (respectively 0,64 cm 3 and 0,77 cm 3 ) that was statistically significant; this is in agreement with previous findings showing that the orbital volume increased of 0.72 cm 3 after treatment with maxillary expander. Due to the absence of a control group, these findings should be taken with some caution since part of this volumetric increment could be attributed to the potential residual grow of this region that reach almost 90% at the age of almost 17 years [32,33] (slight above the mean age of the subjects included in this study). Despite we accepted the null hypothesis of the study since the volumetric increment of the orbital cavity was statistically significant greater in the BB group, it remains questionable if the mean difference of post-treatment orbital changes between the two groups, i.e.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the changes of orbital cavity volume and shape after tooth-borne and bone-borne rapid maxillary expansion (RME)

Giudice

Rustico²,

Ronsivalle

et al. 2020

Head Face Med

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Objective To assess and compare volumetric and shape changes of the orbital cavity in patients treated with tooth-borne (TB) and bone-borne (BB) rapid maxillary expansion (RME). Study design Forty adolescents with bilateral maxillary cross-bite received tooth-borne (TB group = 20; mean age 14.27 ± 1.36 years) or bone-borne (BB group = 20; mean age of 14.62 ± 1.45 years) maxillary expander. Cone-beam computed tomography (CBCT) were taken before treatment (T1) and 6-month after the expander activation (T2). Volumetric and shape changes of orbital cavities were detected by referring to a specific 3D digital technology involving deviation analysis of T1/T2 CBCT-derived models of pulp chamber. Student’s t tests were used to 1) compare T1 and T2 volumes of orbital cavities in TB and BB groups, 2) compare volumetric changes and the percentage of matching of 3D orbital models (T1-T2) between the two groups. Results Both TB and BB groups showed a slight increase of the orbital volume (0.64 cm3 and 0.77 cm3) (p < 0.0001). This increment were significant between the two groups (p < 0.05) while no differences were found in the percentage of matching of T1/T2 orbital 3D models (p > 0.05). The areas of greater changes were detected in the proximity of the frontozygomatic and frontomaxillary sutures. Conclusion TB-RME and BB-RME would not seem to considerably affect the anatomy or the volume of the orbital cavity in adolescents.

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Enucleation, Evisceration, and Secondary Orbital Implantation

Jordan¹,

Klapper²

2020

Smith and Nesi’s Ophthalmic Plastic and Reconstructive Surgery

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Orbital Development as a Function of Age in Indigenous North American Skeletons

Cited by 11 publications

References 31 publications

Quantification of effective orbital volume and its association with axial length of the eye. A 3D-MRI study

Quantification of effective orbital volume and its association with axial length of the eye. A 3D-MRI study

Evaluation of the changes of orbital cavity volume and shape after tooth-borne and bone-borne rapid maxillary expansion (RME)

Enucleation, Evisceration, and Secondary Orbital Implantation

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