Age-related Changes in Globe Position

Purpose: To longitudinally evaluate for changes in globe position as part of the natural aging process. Methods: A Cleveland Clinic Foundation imaging database of all head imaging scans performed from 1995 to 2017 was used to identify adults with normal orbits undergoing imaging studies at least 20 years apart. A total of 100 patients (200 globes) who had CT or MRI scans were studied. Globe position was determined by measuring the distance from the anterior aspect of the cornea to the zygomaticofrontal processes baseline. Clinically significant changes in globe position were defined as changes of >= 2 mm posteriorly (enophthalmos) or anteriorly (exophthalmos). Results: On average, globe projection decreased by 0.25 +/- 2.3 and 0.26 +/- 2.2 mm in the right and left eyes, respectively. Clinically significant enophthalmos with age was measured in 55 (27.5%) globes in 35 (35%) individuals, while clinically significant exophthalmos with age was measured in 43 (21.5%) globes in 26 (26%) individuals. The proportion of cases that developed enophthalmos, exophthalmos, or experienced no change were not significantly different from each other (p = 0.26). No patients developed clinically significant enophthalmos in one eye and exophthalmos in the other. Conclusions: Adults may develop clinically significant enophthalmos, exophthalmos, or no change in globe position over a 20-year period. This lack of uniform change in globe position with age impacts surgical considerations for treatment of the aging periocular region.