Marco Refractor RT-300

* The RT-300s accessory knob is positioned next to the cylinder power/axis knob and all controls are within a hand's breadth of each other. Now you no longer have to reach in front of a patient's view during an examination.

* Cylinder power up to +-6.00D; sphere power from +16.75 to -19.00D.

* "Sure-grip" knurls on the control knobs make them easy to grasp. Combined with the convenient placement of the controls themselves, this helps reduce fatigue.

* Fully synchronized cross-cylinder is standard.

* Large high-contrast numbers on the instrument scales make them easy to read even in subdued light.

TECHNICAL DATA

Sphere PowerRange: +16.75 to –19.00 diopters (+26.75 to –29.00 diopters with optional auxiliary lens)
Step: 0.25 diopters
Cylinder PowerRange: 0.00 to 6.00 diopters (+ or –) (0.00 to 8.00 diopters with 2.00 cylinder in cell)
Step: 0.25 diopters
Cylinder Axis 0 to 180°, 5° steps
Cross Cylinder ±.25 diopters, selectively synchronized with cylinder axis
Rotary Prisms 0D to 20D, in 1D steps
Auxiliary Lens Dial “O” – Open aperture
“R” – Retinoscopic lens
“P” – Polarizing lens, 45°, left eye; 135°, right eye
“WMV” or “RMV” – Maddox rod, vertical; white, left eye; red, right eye
“WMH” or “RMH” – Maddox rod, horizontal; white, left eye; red, right eye
“RL” or “GL” – Red lens, right eye; Green lens, left eye
“Å” – PD alignment lens
“+.12” – +.12 diopter sphere
“PH” – Pin hole
“10D I” or “6D U” – 10D base-in, left eye; 6D base-up, right eye (Dissociating prisms)
“±.50” – ±.50 fixed cross cylinder. “OC” – Occluder

P.D. Adjustment 50 to 80mm, 1mm steps
Convergence Adjustment Infinity to 380mm
Forehead Rest Adjustment 16mm
Corneal Aligning Device 13.75mm from apex of the cornea to the ocular surface of the len
Dimensions 13.07 inches(L) x 4.01 inches(W) x 11.45 inches(H)
Weight Approximately 13.5 pounds
Finish Black, Misty Grey

Standard Accessory Lenses Two .12 diopter and 2.00 diopter cylinder lenses; two plano lenses for sealing front opening Standard Accessories 1 near point card with holder and reading rod, dust cover, brush, face shield, accessory case Standard Options Plus or minus cylinders, cross cylinders of 0.25, 0.37 or 0.50 diopter, Retinoscopic lens of +1.50 dioptersor +2.00 diopters

Optional Accessories Split-image cross cylinders, corneal distance measuring device, magnification lens (for sphere scale), quick change cross-cylinders, auxiliary lenses for sphere power range extension (+10.00D, –10.00D lense.