🔹 Definition The muscle balance test is a binocular vision test performed to evaluate the ability of the extraocular muscles to maintain proper eye alignment and detect conditions like phoria (latent squint) or tropia (manifest squint). --- 🔹 Purpose of the Test To check for ocular alignment. To assess fusion and binocular single vision. To detect heterophoria (latent deviation) or heterotropia (manifest squint). To guide in prescribing prisms, vision therapy, or surgery if imbalance is presen