The forced duction
test was free of restriction, and a smooth porous polyethylene implant was used to repair the orbital floor defect.
If a preoperative forced duction test was positive, antagonist muscle weakening surgery was performed, and then augmented partial rectus muscle transposition (APRMT) + partial horizontal rectus recession-resection was performed 2 months later.
A forced duction test was performed before surgery to determine if the antagonist muscles of the paralytic muscle had any restrictive factors such as contracture.
Diplopia occurs due to many factors which can be differentiated clinically or by forced duction test.
Mechanical entrapment of the orbital content most commonly the inferior rectus muscle followed by the inferior oblique muscle causes diplopia in up gaze and down gaze and the forced duction test in this case is positive.
Strabismus surgery was performed according to the results of forced duction test (FDT).
The forced duction test was positive for inferior rectus (IR) of the involved eye in 20 of the 36 eyes (55.55%).
test preoperatively showed restriction in all directions and maximum in abduction.
Indications for early operation are: symptomatic diplopia with positive forced duction
and CT evidence of entrapment of orbital fat or septae with no improvement over 1 to 2 weeks.
Treatment is generally based on carrying out the forced duction
test preoperatively showed restriction in adduction and supraduction in both cases.
were 1/4 in all directions under general anaesthesia.