Optical Ophthalmology Prism Group-Diopter: 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40, 45, 50. Ophthalmologists perform trigeminal examinations on patients' eye muscles for quantitative examination and walking vision training. Essential Tool for Eye Care : Supplied to major ophthalmology hospitals, this prism set is crucial for the quantitative examination of eye muscles and the training of strabismus vision, enhancing patient care and treatment outcomes. Constructed with High-Quality Materials: Crafted from environmentally friendly Resin and encased in a high-quality aluminum alloy box, this set ensures durability, , and ease of storage, making it ideal for frequent use in clinical environments. Trusted by Optometrists Worldwide: Renowned for its reliable performance and precise measurements, this prism set is a staple in of optometry, helping make accurate diagnoses and build confidence in their clinical practices. Versatile Application Across Settings: Ideal for use in educational, research, and clinical settings, this prism set supports a wide range of optical studies and visual examinations in glasses shops, hospitals, schools, and corporate ophthalmology departments. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you Colour:Transparent Material:Resin Package Contents: 1 * Ophthalmic Prism Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.