Ptosis/ Blepharoptosis Flashcards
Ptosis/ blepharoptosis: questions to ask?
- Is the ptosis of new onset or is it an exiting problem? 2. Are there abnormalities in pupil size?
Congenital ptosis Most common cause:
localized myogenic dysgenesis
localized myogenic dysgenesis
There are no abnormalities in pupil size
Congenital ptosis least common cause:
congenital horner syndrome or congenital cn 3 palsy: There are no abnormalities in pupil size
Aquired (adult) ptosis Most common cause:
acquired aponeurotic ptosis
acquired aponeurotic ptosis
- Acquired ptosis due to aging, surgery or inflammation
- Ill advised squeezing of lumps on eyelid
- There are abnormalities in pupil size
Aquired neurogenic ptosis:
acquired horner syndrome, acquired cn 3 palsy There are no abnormalities in pupil size
Acquired myogenic ptosis: ocular myasthenia gravis
- Acquired weakness of SR and or MR muscles
- Concurrent weakness of levator palpebrae superiors is com
- No abnormalities in pupil size
Perrla and Pupil Shape: assess the?
corneal light reflections for alignment. Then compare the pupils from side to side
Pupillary dyscoria:
abnormalities in shape of pupil
Coloboma: acquired coloboma:
malignant melanoma of the iris
Synechiae:
adhesion of the iris to the cornea or the lens
Synechia/ adhesions are an uncommon but…
complication of acute iritis/ ant. Uveitis
Pupillary anisocoria:
an inequality in pupil size in seen in up to 20% of populationa.- Pupillary reflexes are intact
Neurogenic anisocoria: examples
- right CN III palsy/ oculomotor paralysis
- right adie’s tonic pupil/ adie’s pupillotonia
