Is a small beady eyes appearance a result of small eyeballs? How can small eyeballs be diagnosed( CT scan)? (Photo)

It is generally accepted that the eye size is constant amongst humans with no significant variations and that the orbit is what determines eye appearance. In my case however I really feel I have small eyeballs(even if I have a decent amount of myopia and astigmatism which should supposedly make my eyeballs bigger) and that makes them look pretty unappealing. Is my eye globe size or somethng else that concerns the orbit? I do have some ptosis but I doubt this is the main cause of the problem.