斜视与屈光不正英文课件

thenormaleyefixingandtheeyewiththepareticmuscledeviating.Prismdiopter:Aunitofangularmeasurementusedtocharacterizeoculardeviation.A1-diopterprismdeflectsarayoflighttowardthebaseoftheprismby1centimeterat1meter.Onedegreeofarcequalsapproximately1.7∆.DefinitionsSecondarydeviation:Thedeviationmeasuredwiththepareticeyefixingandthenormaleyedeviating.Torsion:RotationoftheeyeaboutitsanteroposterioraxisIntorsion(Incycloduction):Rotationofthe12O’clockmeridianoftheeyetowardthemidlineofthehead.Exorsion(Excycloduction):Rotationofthe12O’clockmeridianoftheeyeawayfromthemidlineofthehead.Vergences(Disjunctivemovements):Movementofthetwoeyesinoppositedirection.Convergence:Theeyesturninward.Divergence:Theeyesturnoutward.DefinitionsPhysiologyIndividualMuscleFunctionMotorAspectsMotorAspectsFieldofActionPhysiology