According to ophthalmology studies done on ptosis patients, occurrence rates are as follows. The average age for females experiencing aponeurotic ptosis is 67.83 years and the corresponding male average age is 68.19. The average age for congenital ptosis is 12.27 years for females and 8.57 years for males. The average age for mechanical ptosis is 49.41 years in females and 43.30 years in males. The average age for myogenic ptosis is 53.45 for females and 43.30 for males. The average age for neurogenic ptosis is 43.6 years in females and 32.62 years in males. Lastly, the average age for traumatic ptosis is 35.12 years in females and 33.4 years in males. Ptosis was not found to have any overall gender or racial preference.
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