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OKN drums accurately test for nystagmud when rotatedat 8-10 rpmAll drums spin on ball bearings for eortless rotation...

Used to produce involuntary Optokinetic nystagmud(OKN) physiologic jerk in patient's eyes...

Pediatric Chronister - Pocket Acuity Chart..

Refractive Measurement Range Spherical Value(S) : -30D ~ +25D (step : 0.12/0.25D) Cylindrical Value(C) : 0 ~ ±10D (step : 0.12/0.25D) Axis (A) : 0° ~ 180° (step : 1° ) Measurement Accuracy Spherical Value between ±10D : ±0.25D Beyond ±10 ∶ ±0.5D ..

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* Used with a transformer.* Rotation of sleeve revolves streak through180 depgrees.* Special light weight.* Contents: RX-1 head, electric handle andcord, spare bulb.* Bulb: 4V, 3.6W (L-4)...

* Used with C cell batteries (2 pcs)* Contents: RX head, C cell battery handle,spare bulb, +2D presbyopic lenses.* Bulb: 3V, 1W (L-28)..

* Used with AA cell (2 pcs)* Contents: RX head, AA cell batteryhandle, spare bulb, +2D presbyopic lenses.* Bulb: 3V, 1W (L-28)..

* Used with a rechargeable battery RC-B.* Two handle can be charged at the sametime.* Content: RX head, rechargeable batteryhandle (1pc) desk charger, spare bulb, and+2 presbyopic lenses.* Bulb 4V, 3.6 W (L-27)...

* Used with a rechargeable battery RP-B,built in to the handle, making the use of aseparate charger unnecessary.* e plug comes out of the handle with apress of a button.* Contents: RX head, plug-in rechargeablebattery handle, spare bulb, +2D presbyopiclenses.* Bulb: 4V, 3.6W (L-27)..

(By Stereo Optical Model TAC II)TheTeller Acuity Cards are a classic test of visual acuity for infants, young children and individuals with disabilities. The extensive evidence-base gathered in their development and use provides a strong foundation for their application in ophthalmology, optometry and developmental practice...

Visslo ST 88 Externer 3D-Tracer Der Tracer ST 88 kann mit mehreren Visslo F8 Schleifmaschinen gleichzeitig betrieben werden...

The Ultramatic RX Master™ Phoroptor® – the first and always the best refracting instrument - continues to be the industry standard after nearly 80 years. Every Phoroptor® has that unmistakable feel of quality. The smooth rotation of the dials. The virtual absence of play in the mechanisms. The precise, solid click of the control knobs. Constant rem..

The Ultramatic RX Master™ Phoroptor® – the first and always the best refracting instrument - continues to be the industry standard after nearly 80 years. Every Phoroptor® has that unmistakable feel of quality. The smooth rotation of the dials. The virtual absence of play in the mechanisms. The precise, solid click of the control knobs. Constant rem..

• LCD 19” contrast calibrated system for a precise sensitivity measurement• Wide Range of Examination: 0.03 – 1.6• Adjustable distance: up to 8 m or 26 ?• Two preselected background luminance levels: dark room or normal room• Visual units: 12 visual acuity scale (decimal, log, Log Mar, 20 ?, 10 ?, 6 m, 3 m …)• Just 3 remote control key to run all t..