266-Piece Professional Optical Audition Set - Metal & Aluminum Frame Optometry Kit with Shell Automatic Lens - Perfect for Eye Exams, Vision Testing & Optometry Practice in Clinics & Optical Shops

* Optometry case can always keep lenses' clearness and transparency, while wooden case will fog lenses in influence of chemical glue after a period of time.

* Set of 266 trial lenses, of accurate power degrees perfect outlook clearly on both sides of each handle.

* Trial lens set with metal rims, suitable for MRI or environments requiring non-magnetic supplies/equipment.

* Note The interpupillary distance of the frame is fixed and can not be adjusted.

* Focus on every detail.Science and technology care for your health.