Pseudoptosis encompasses conditions that mimic true ptosis, such as brow ptosis and laxity and dermatochalasis. Pseudoptosis can also be caused by microphthalmos or by phthisis bulbi, conditions resulting in the eyelids being inadequately supported by the globe. Hypotropia also causes pseudoptosis, because the perception of eyelid position is related to the position of the eye (see Fig 11-2). Contralateral eyelid retraction may also give rise to pseudoptosis.
Excerpted from BCSC 2020-2021 series: Section 5 - Neuro-Ophthalmology. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.