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Short description

The SL-D4 is a digital slit lamp with five magnifications. It can be used as a conventional examination instrument or in combination with one of Topcon's digital cameras as an imaging tool. Read more>

Key Features

  • Five magnifications: 6X, 10X, 16X, 25X, 40X
  • Optional DC-3 & DV-3 digital camera
  • Optional SL-SCAN-1, slitlamp based OCT
  • Optimal clarity, colour resolution and depth-of-field
  • Compact and easy to use

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Type Galilean magnification changer with converging binocular tubes
Magnification selection 5 steps, by drum rotation
Eyepiece 12.5X
Magnification ratio, (field of view) 6x (35,1mm)
10x (22,5mm)
16x (14,1mm)
25x (8,8mm)
40x (5,6mm)
Slit width Continuous from 14mm to 0mm (at 14mm, slit becomes a circle)
Slit length Continuous from 14mm to 1mm (at 14mm, slit becomes a circle)
Slit angle 0 to 180 degree with horizontal scanning capability
Filters Blue, Red-free, Amber, UV Cut (normal use), IR Cut (normal use)
Illumination lamp 6V, 20W halogen lamp
Longitudinal movement 90mm
Lateral movement 100mm
Fine base movement 15mm
Vertical movement 30mm
Chinrest vertical movement 80mm
Chinrest fixation target Red-LED
Power input (primary) 100-120V, 220-240V AC
Power frequency 50/60Hz
Power consumption 106VA
Table 550mm x 399mm x 558mm
Unit table 440mm x 379mm x 558mm
Table and chinrest 329mm x 306mm x 415-445mm
Table 17 kg
Unit Table 16 kg
Table and chinrest 9,5 kg


The SL-D4 is part of Topcon's D-Series Digital Slit Lamps. It can be used as a conventional examination instrument or with the several imaging options. SL-D4 has the same product features as SL-D2, except for the magnification. SL-D4 has two more magnifications 

Used as a conventional examination slit lamp, the SL-D4 incorporates three filters: a blue filter, red free filter and an amber filter. The amber filter improves the contrast and colour of retinal images.

Used as a digital slit lamp, the SL-D4 will be seamless integrated with:
-DC-3, an 8 megapixel camera
-DV-3, an 3,14 megapixel video camera
-SL SCAN-1, a slit lamp based OCT for posterior & anterior segment

The SL-D4 has many options such as a yellow filter, back ground illumination and Topcon Fundus Viewer, FV-1L