Ocular volume measured by CT scans

Hahn, Francis J.; Chu, Wei-Kom

doi:10.1007/bf00342674

Cited by 32 publications

(31 citation statements)

References 3 publications

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“…This is in contrast with the speculation of Ahmadi et al (22) that the orbital adipocytes undergo atrophy with advancing age. The significant correlation of age with TOFV may be attributable to a relative reduction in muscular bulk and volume of the globe itself with increasing age (23,24). In addition, Darcy et al (25) observed an increase in total orbital fat and periocular soft tissue with aging, which they claimed was due to fat expansion, which is consistent with the results of the present study, and which may be the rationale for fat excision from the eyelids in plastic and aesthetic surgery.…”

Section: Unstandardized Coefficients --------------------------------mentioning

confidence: 99%

Exploration of orbital and orbital soft-tissue volume changes with gender and body parameters using magnetic resonance imaging

Erkoç

Öztoprak

Gümüş

et al. 2015

Experimental and Therapeutic Medicine

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Abstract. The aim of the present study was to examine the total orbital volume (TOV) and total orbital fat volume (TOFV) in normal orbits in different age groups and to investigate the correlation of these measurements with age, gender and body parameters by magnetic resonance imaging (MRI). MRI data were acquired retrospectively from a total of 1,453 subjects divided into five age groups with 10-year intervals. The TOV and TOFV were measured using T1-weighted MRI for each subject and body parameters were also obtained. The measurements demonstrated that TOV increased with age and that the volume was larger in men than in women. While weight and height exhibited positive correlations with TOV in male and female subjects in the 20-29, 30-39 and 40-49-year-old age groups, only weight showed a positive correlation with TOV in female subjects in the 50-59 and 60-69-year-old age groups. However, TOFV increased by age in all groups and the increments were larger in women than in men. These results provide basic information about the effect of age, gender and body parameters on TOV and TOFV. The variations in TOV are associated with orbital soft-tissues changes rather than with TOFV.

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Section: Unstandardized Coefficients --------------------------------mentioning

confidence: 99%

Exploration of orbital and orbital soft-tissue volume changes with gender and body parameters using magnetic resonance imaging

Erkoç

Öztoprak

Gümüş

et al. 2015

Experimental and Therapeutic Medicine

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“…Further, Priestly [12] and Hahn and Chu [1] reported that the eyeball volume of young adult subjects was larger than that of older adults. The study on the change of the orbital size (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, many studies have analyzed the relationships between orbital or eyeball volumes and age, gender, or race using computed tomography (CT) or magnetic resonance imaging (MRI) [1][2][3][4][5][6][7][8][9][10][11] . Comparing MRI and CT data, Chau et al [11] reported that orbital and eyeball volume measurements using MRI correlated with those acquired using CT and that MRI provided a more accurate result than CT.…”

Section: Introductionmentioning

confidence: 99%

A Study on Orbital Volume of Korean People in Their 20s or 40s

Kim¹,

Lee²,

Lee³

et al. 2011

Ophthalmic Res

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Aims: To measure the orbital volume of normal Korean people in two different age groups (subjects were in their 20s or 40s), and analyze the differences of orbital volume with respect to age and gender. In addition, to analyze correlation between body parameters (height and weight) and the orbital volume. Methods: Magnetic resonance imaging (MRI) data were acquired for a total of 143 subjects, consisting of 71 subjects in their 20s (32 males and 39 females) and 72 subjects in their 40s (30 males and 42 females). Two-way ANOVA was used to analyze how orbital volume changes with respect to gender and age. A multiple regression analysis was performed to investigate the correlation between body parameters and the orbital volume. Results: The orbital volume of subjects in their 20s was larger than that of subjects in their 40s, and the volume was larger in men than in women. As age increased, the decrease in the orbital volume of women was greater than that of men. While weight and height showed positive correlations with orbital volume in male and female subjects in their 20s, respectively, weight showed a positive correlation with orbital volume in male and female subjects in their 40s. Conclusions: These results provide basic information about the effect of age, gender, and body parameters on orbital volume of Korean people in their 20s or 40s.

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“…Macrophthalmus is said to be present when all dimensions of the eye are increased but glaucoma is not present (21 In previous studies measuring MRI and CT scanning, VE and VO were estimated using planimetry, but the coeffi cient of error was not calculated. Furthermore, none of these studies used stereological methods to estimate the volume (10)(11)(12)(13)(22)(23)(24).…”

Section: Discussionmentioning

confidence: 99%