Exhale while lifting or straining to avoid Valsalva retinopathy or bleeding from stressed retinal vessels

Stage III Intraoperative Adjustmentof Eye Muscle Surgery (Under General Anesthesia) for Neuroparalytic and Mechanical (Restrictive) Incomitant Strabismus: Report of Results in a Series: Outcomes in 20 Eye Muscle Surgeries in Twelve Patients.