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Do not base your order on the picture presented.
Includes Sizes - 5-10-15-20 & Red Lens.
These prism sets have been re-engineered to solve the problem of birefringence which can hinder their use in certain clinical applications. Prisms are calibrated and made of high quality plastic for superior performance and accuracy. Includes multiple sizes. Provided in a durable case. All sets include Red Lens
S-4 set one each of 5-10-15-20 Diopter & one Red Lens
S-8 set two each of 5-10-15-20 Diopter & one Red Lens
Medex SKU: GL-113040