This distinction is not well defined yet especially for cases of the posterior microphthalmos. When the eyeball is visibly small, the diagnosis is simple but in border cases the distinction between the normal size and the pathologically small size of the eyeball requires precise knowledge of the normal anatomy. Microphthalmos is a disorder of the eye, often congenital, due to arrest in growth of the ocular tissues. The oblate/prolate shapes of the eyeball can be traced already in newborns and can influence the development of myopic refractive errors.
In ophthalmology, eyeball trauma, cancer, congenital glaucoma, retinal blastoma, and some other disorders can change the size of the eyeball. Thus, gross anatomy of the eye attracts less attention though it is useful not only in cases of eye diseases but in some neurological conditions as well. Currently, CT investigations in ophthalmology are very detailed. These data might be useful in ophthalmological, oculoplastic, and neurological practice.įor decades, computed tomography (CT) has been routine investigation in ophthalmology and ophthalmoneurology. In the transverse diameter, the eyeball size may vary from 21 mm to 27 mm. The size of a human adult eye is approximately (axial) with no significant difference between sexes and age groups. Strong correlation was found between the transverse diameter and the width of the orbit. We did not find statistically significant differences of the eyeball sizes among the ethnicities we dealt with. The right eyeball was slightly smaller than the left one but this difference was statistically insignificant. We did not find statistically significant differences correlated with gender of the patients and their age. The correlation analysis was performed with the following variables: orbit size, gender, age, and ethnic background.
The data obtained from the left eye and from the right eye were compared. In a prospective cohort study, the CT data of consecutive 250 adults with healthy eyes were collected and analyzed, and sagittal, transverse, and axial diameters of both eyeballs were measured. The purpose of the current research was to reevaluate the normative data on the eyeball diameters.
0 kommentar(er)
