Background Illumination with IR Filter for Slit Lamp
BG-4M
Non-contact Meibography
Visualize Meibomian Glands through the slit lamp !

No need to have a light probe. The world’s first non-contact product* to visualize the meibomian glands. Easy, non-invasive capturing!
*Topcon research
※White part shows meibomian glands. Black & white color is reversed compared to a conventional transilluminating light probe when observing meibomian glands.
※ Images provided by Reiko Arita, MD, PhD, Shiro Amano, MD, PhD, University of Tokyo School of Medicine
What are Meibomian Glands ?
The Meibomian Glands produce an oily substance that protects the tear film from excessive evaporation, thereby preventing the risk of dry eye.
Features
- Reduced infection risk due to non-contact technique
- Enables capture of full upper or lower meibomian glands in one single shot
Easy attachment and one-touch change-over switch for meibomian gland use- Only available with Topcon Slit Lamp SL-D7/D8Z**

Cases
※ Images provided by Reiko Arita, MD, PhD, Shiro Amano, MD, PhD University of Tokyo School of Medicine
※ References: Arita R, et al. Ophthalmology 115:911-915, 2008 / Arita R, et al. Ophthalmology 116:379-384, 2009 / Arita R, et al. Ophthalmology in press

A 28-year-old female with normal meibomian glands
※White part shows meibomian glands. Black & white color is reversed compared to a conventional transilluminating light probe when observing meibomian glands.

A 59-year-old male
Age-related changes of meibomian glands, mild loss

A 78-year-old male
More than two thirds of loss of meibomian glands Meibomian gland dysfunction

A 31-year-old female
Shortening of meibomian glands by wearing hydrogel lens for 12 years
Possible candidate patients for the BG-4M
- Dry eye
- Meibomian Gland Diseases
- Blepharitis
- Contact lens wearers (especially long term users)
- A patient who had been treated with a series of different over-the-counter ocular surface lubricants that failed to improve his/her condition
- High use of Video Display Terminals (VDT)
- Elderly people
※ Supervisor: Reiko Arita, MD, PhD University of Tokyo School of Medicine
| Performance | Three-step illumination level switching and infrared illumination switching. (For meibomian glands use, TV relay lens or TV attachment + infrared CCD camera are necessary.)*** | |
|---|---|---|
| Dimensions | (Lamp House) | 80mm(W)×80mm(D)×116mm(H) |
| (Light Guide Length) | 440mm | |
| Weight | 340g | |
- ** BG-4M is an accessory for Topcon Slit Lamp SL-D7/D8Z.
- *** Infrared CCD Camera, Slit Lamp and TV relay lens / TV attachment are sold separately.








































