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ARTICLES
Year : 1976  |  Volume : 24  |  Issue : 3  |  Page : 33-35

Slit lamp photography of the eye


Department of Ophthalmology, Medical College, Amritsar, India

Correspondence Address:
Daljit Singh
Department of Ophthalmology, Medical College, Amritsar
India
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Source of Support: None, Conflict of Interest: None


PMID: 1031405

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How to cite this article:
Singh D. Slit lamp photography of the eye. Indian J Ophthalmol 1976;24:33-5

How to cite this URL:
Singh D. Slit lamp photography of the eye. Indian J Ophthalmol [serial online] 1976 [cited 2020 Nov 24];24:33-5. Available from: https://www.ijo.in/text.asp?1976/24/3/33/31297

Proper documentation of an eye condition frequently demands a good quality photograph. Such photographs have to be taken from a close to a very close range. Negatives of I : 2 or 1 : 1 can be easily obtained by the use of extension tubes or extension bellows, to any single-lens reflex camera. But higher magnifications need the use of sophisticated equipment, which is generally beyond the reach of most of our institutions.

Over the past many years, I have been making attempts to photograph the eye through the slit-lamp microscope with the bare min­mum of equipment, that is an ordinary single­lens reflex camera and a medium powered elec­tronic flash.

The set up for slit lamp photography is very simple. The camera is placed behind one of the eye pieces of the slit-lamp microscope and the electronic flash is held by the assistant, facing the eye of the patient at an angle of 40 degrees [Figure - 1].

The camera should have a lens of 2.8f or less. The lens mount should be such that the eye­piece of the slit-lamp microscope does not scratch the lens of the camera. A camera lens of 1.4f or 1.8f is very likely to get scratched in this set up and is preferably avoided.

The aperture used is always 2.8. The ex­posure of the film is controlled by selecting a particular speed of the film and by chang­ing the distance of the electronic flash from the eye of the subject. For black and white work, I always use a medium-grain film of 180 ASA and for colour negative work, a film speed of 80 ASA is used. Colour transparency work demands a very exact exposure and is more difficult to handle.

Any slit-lamp microscope may be used for the purpose of photography. I have worked with Haag Streit 600 model and Carl Zeiss Jena instruments.

The results of slit lamp photography throu­gh the above set up are shown on [Figure - 1],[Figure - 2],[Figure - 3],[Figure - 4],[Figure - 5],[Figure - 6],[Figure - 7],[Figure - 8],[Figure - 9],[Figure - 10],[Figure - 11],[Figure 12].

In my experience photography through Carl Zeiss Jena slit-lamp microscope has been more satisfying, because there are many mag­nifications to choose from and secondly, the large eyepieces of the microscope allow a wider field to be photographed. The photographs given here have been taken through this instrument.

There is no difficulty in modifying the magnification within certain limits, at the time of enlarging.

With this simple set up, it has been possible to photograph the angle of the anterior cham­ber- At the time of photography, the assistant holds electronic flash as well as the goniolens. The angle of the flash is kept at the minimum possible.

The results of goniophotography are shown in [Figure - 11] in a case of open angle glaucoma. The pigmented corneoscleral trabeculae and ciliary body are clearly seen. Photography of the angle of the anterior chamber involves certain amount of wastage of the film, since focussing of the structures having a poor cont­rast is difficult on the screens of most cameras and many pictures are spoilt by reflections from the anterior surface of the goniolens.


    Figures

  [Figure - 1], [Figure - 2], [Figure - 3], [Figure - 4], [Figure - 5], [Figure - 6], [Figure - 7], [Figure - 8], [Figure - 9], [Figure - 10], [Figure - 11]



 

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