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Ophthalmometer OM 4

OM 4

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Ophthalmometer - OM 4

The TOPCON OM-4 Ophthalmometer (Sutcliff Type) is a compactly designed and easy to use professional instrument providing precise objective measurements of the corneal radius of curvature of both cornea and contact lenses.

Topcon offers two models :

OM-4 :
Table plate for IT-1, AIT-15, ATE-650 table mount Power transformer, Chinrest.

OM-4S ( for IS-series unit mount :
This model is not supplied with table plate, transformer and power connector.


Internal scale reading system with extended range :
Besides the mire images, the millimetre scales for the radius of curvature and the diopter scales for the corneal refractive power, of both vertical and horizontal axis are viewed in the field of view at all times, thus greatly speeding up measurements.

Measurement of corneal astigmatism :
Corneal astigmatism is easily detected. Horizontal displacement of the mire images indicates existence of astigmatism. The axis rotating handle is used to coincide the measuring head with the axis, after which the vertical and horizontal knobs are used to coincide the mire images, showing the great ease and simplicity of one position measurement.

Speedy one-position measurement :
While measuring one of the principal meridians, the other principal meridian is also measured at the same time, which means that it is not necessary to measure both principal meridians separately in case of corneal astigmatism.

Thus it's truly effective in reducing measuring time, it's more accurate and also helps promote patient's co-operation.

Highly precise instrument :
Mire images are very sharp and easy to coincide, producing measurement results with a minimum of individual variations.

New, Omni-Directional Joystick for unprecedented manoeuvrability :
Easy, one-handed vertical, horizontal, diagonal adjustment improves performance while decreasing fatigue. This is only one of the new features that makes the TOPCON OM-4 highly desirable ophthalmoscopic equipment for the busy practitioner.

Wide range of measurements :
Range of measurement is extremely wide, with millimetre scale covering 5.5 to 12.0mm and the diopter scale covering 60 to 28 diopters.
Fritz Ruck
HAI Labs Ruck