Horizontal and Vertical Prism Bar Set Manual Analog

The Horizontal and Vertical Prism Bar Set Manual Analog is an ophthalmic diagnostic tool used for measuring ocular deviation, assessing strabismus and phorias, evaluating fusional reserves, and testing binocular vision and extraocular muscle balance. The set typically contains one horizontal prism bar and one vertical prism bar, with progressively increasing prism diopter values clearly marked along each bar. The examiner places the required prism power in front of the patient’s eye during cover testing, vergence assessment, or other binocular vision examinations. Because it is completely manual, the set requires no electricity, batteries, software, or calibration electronics, making it suitable for routine ophthalmology, optometry, orthoptic and teaching environments. Key Features Complete horizontal and vertical prism bar set Manual analog operation No batteries or electricity required Clearly marked prism diopter graduations Designed for rapid sequential prism-power selection Suitable for horizontal and vertical ocular deviation assessment Useful for strabismus and heterophoria testing Supports fusional reserve and vergence assessment Precision optical prisms Durable reusable construction Protective carrying/storage case Suitable for ophthalmology, optometry and orthoptic clinics