40H Keeler Slit Lamp
click to see larger image

40H Keeler Slit Lamp

40H Keeler Slit Lamp
click to see larger image


40H Slit Lamp by KEELER

Painstakingly Crafted Slit Lamps

Introducing a new Slit Lamp from Keeler – quality design and leading technology Slit Lamps with a contemporary design.

We set ourselves the task of designing a slit lamp to exceed performance expectations. 

Our painstaking attention to detail has helped us to achieve just this.

The result is Keeler Slit Lamp, combining intricate performance with practical elegance.

Elegant Design

Style and Substance

Keeler is known for exceptional design ability.  We have combined classic beauty with modern technology, resulting in the perfect blend of style and substance.


Keeler Slit Lamp provides the functionality and performance you want, need and expect from a Slit Lamp, contained within a beautifully crafted, stylish case.

Ease of use

The controls are perfectly placed for ease of use, without compromising the clean and elegant lines of the product.  Our design flair gives the product a sleek, beautiful profile.

Exceptional Optics

Market leaders

Keeler is renowned for market-leading optics and has been dedicated to optical design and manufacture for nearly 100 years.

Customer confidence

Our customers have absolute confidence in the quality, accuracy and reliability our optical design delivers.

Advanced manufacturing

Our advanced design and manufacturing techniques give Keeler Slit Lamp the advantage of quite simply stunning optical performance.


  • Keeler optics
  • British built
  • Stylish and contemporary design
  • X 6 to x 40 magnifications
  • Integrated yellow barrier filter
  • 1m Square aperture for Uveitis assessment
  • Halogen or LED illumination
  • Illumination control mounted next to joystick

Slit Lamp Specification

Optical System

Type Galilean converging binoculars @ 8°
Magnification Rotating drum change x6, x10, x16, x25 & x40
Eyepiece x12.5
Field of view 34 mm, 22 mm, 14 mm, 8.5mm, 5.5 mm
Interpupillary distance 49.0mm to 77.0mm
Objective lens focal distance 107mm
Objective lens convergence angle 13°

Slit Projection System & Base

Slit width
0-12mm continuously variable
Slit length
12mm (1.8mm – 12mm continuously variable)
Aperture diameters
0.2mm, 1mm Square, 2mm, 3mm, 5mm, 9mm and 12mm
Clear; red free; neutral density; diffuser; blue; IR heat
absorbing filter permanently installed.
Slit angle
+/- 90° continuous
Slit rotation
+/- 180° with reference scale
Slit vertical tilt
0°, 5°, 10°, 15° & 20°
Base travel
25mm Z-axis, 107mm X-axis, 110mm Y axis.
Horizontal fine adjustment
Table top dimensions
405 x 500mm
Fixation lamp
Light source
LED / 6V 20W Halogen lamp


Power Supply

Power supply unit

Switch mode, (110V – 240V input) +/- 10% multi plug
compliant to EN60601-1 EN 61000-6-2, EN 61000-6-3

Power supply output

12V DC: 2.5 amps must be IEC/EN 60601 compliant

Complies with

Electrical Safety (Medical) BS EN 60601-1
Electromagnetic compatibility EN 60601-1-2
Ophthalmic instruments - Fundamental requirements
and test methods ISO 15004-1:2006
Ophthalmic instruments - Optical radiation hazard ISO