Features:1) Measurement minimum pupil diameter: 2.0mm2) Pupils of patient all over the world can be measured easily 3) Selectable functions mode: you can select and change diopter steps, vertexdistanc

Specifications:1) Range of measurement:a) Pupillary distance of two eyes: 45 - 82mmb) Pupillary distance of the left and right eyes: 22.5mm - 41mm2) Working distance measuring grades: 30cm, 35cm, 40cm

Specifications:1) Range of measurement: a) Pupillary distance of two eyes: 45 - 82mm b) Pupillary distance of the left and right eyes: 22.5mm - 41mm2) Working distance measuring grades: 30cm, 35cm, 40

Specifications:1) Material: light-weight metal / plastic2) Holds 8 trial lenses3) Lens holder with a diameter of 38mm4) Fully adjustable temple length and nose rest5) Easily changeable cylinder axis6)

Specifications: 1) Material: light-weight metal / plastic2) Holds 8 trial lenses 3) Lens holder with a diameter of 38mm4) Fully adjustable temple length and nose rest5) Easily changeable cylinder axis

Features:1) Advanced optical design, no reflection, wide and clear visual field2) Super light, comfortable3) +20D VOLK aspheric lenses4) Adjustable locking button and illumination control button ensur

Features: 1) Advanced optical design, no reflection, wide and clear visual field2) Super light, comfortable3) +20D VOLK aspheric lenses4) Adjustable locking button and illumination control button ensu

Features:1) New setup leveling mechanism2) Control of spherical power:a) Capable of measurement for the fullest range of +16.75D~0~-19.00Dwith the step of 0.25Db) Furthermore by application of an auxi

Features:1) New setup leveling mechanism2) Control of spherical power: a) Capable of measurement for the fullest range of +16.75D~0~-19.00D with the step of 0.25D b) Furthermore by application of an a