Is eye size related to orbit size in human subjects?

Abstract

The purpose of this study is to determine if there is an association between eye size and the volume of the orbit in adult subjects. Thirty-three subjects with varying degrees of ametropia (+1.00 to -12.75 D) underwent magnetic resonance scan of the orbit. Results show that the larger myopic eye was not associated with a larger orbit.

Estimation Of The Eyeball And Orbital Volume Using The Cavalieri Principle On Computed Tomography Images

“…We compared the VO data from our subjects who were aged from 18 to 40 years old with those presented in the study of Furuta (26) and Chau (11). Male and female subjects in Furuta's study had a slightly higher VO than those in our study, but Chau's result was similar to our subjects' result.…”

“…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).…”

“…They did not use the stereological approach for volume estimation. Cahu et al (10,11) used the polygon regions of interest (ROI) function in OSIRIS for the estimation of orbital and eyeball volume. Orbital volumes were found by drawing ROI manually on each T1-weighted MR orbit scan using a stylus on a drawing tablet connected to the computer (11).…”

New insights into differences in brain organization between Neanderthals and anatomically modern humans

“…Since even recent humans living at high latitudes require larger eyeballs to attain the same level of visual acuity and/or sensitivity as individuals living at lower latitudes [13], Neanderthals would probably have had larger eyes than contemporary AMHs, who had only recently emerged from low-latitude Africa. Components of the visual system scale with each other, from orbits and eyes [14,15] (contra [16]) through to the cortical primary (V1) and downstream visual areas (V2, V3 and V5/MT) in the brain [9,15,17 -22]. This means that if Neanderthals had larger eyes than AMHs, they would also have had larger visual cortices.…”

Análise da retrusão do terço médio da face e dismorfologia orbital em crianças portadoras das Síndromes de Apert e Crouzon

“…For example, as the cerebrum expands downward in infancy, the orbital roof moves inferiorly (56). The relationship between the orbital and globe volume invites elucidation, since current evidence suggests that globe growth has no influence on the orbit in humans (57), despite the contraditory clinical evidence: increased orbit in buphthalmos and decreased orbital volume in anophathalmia compared to healthy controls (58). This contradiction has stimulated our research group to investigate this complex relationship in our patient population.…”