[Accurate Measurement]: The kit includes horizontal (16) and vertical (15) prism strips, providing a comprehensive measuring range for thorough inspections. It offers versatility and accuracy in detecting and quantifying ocular deviations [Comprehensive Deviation Measurement]: The precision vision prism strip set can accurately measure the vertical and horizontal deviation of the eye. It can detect potential deviation and explicit deviation, providing valuable diagnostic information [Optical Ophthalmic Prism Set]: 1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40, 45, composed of 16 degrees of prism; vertical triangular prism row consists of: 1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 25, 30, composed of 15 degrees of prism [With Storage Box]: The prism bars are conveniently housed in a durable aluminum case, providing secure storage and easy transportation. It protects the prism bars from damage and allows for safe and organized usage [Application]: The product is supplied to major ophthalmology hospitals for dispensing glasses, which is convenient for ophthalmologists to conduct quantitative eye muscle examination and strabismus vision training for patients with various prisms