PTOSIS

DEFINITION--- 

                    DROPPING OF UPPER EYELIDS OR ABNORMAL FALLING DOWN OF EYELIDS CALLED PTOSIS.

ETIOLOGY------

• CONGENITAL PTOSIS
• ACQUIRED PTOSIS
•   PSEUDOPTOSIS

 ACQUIRED PTOSIS------------- 

1. NEUROGENIC
2. MYOGENIC
3. MECHANICAL
4. TRAUMATIC       

EXAMINATION FOR PTOSIS------- 

AMOUNT OF PTOSIS----   MILD PTOSIS= 2mm

                                              MODERATE PTOSIS= 3mm

                                              SEVERE PTOSIS = 4mm or MORE

PTOSIS MEASUREMENT------- 

                 MRD1, MRD2, MRD3 { MARGINAL REFLEX DISTANCE}                      

OCULAR MOTILITY TESTING----- 

• JAW-WINKING PHENOMENON
• BELL'S PHENOMENON
• CORNEAL SENSITIVITY