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| LETTER TO EDITOR |
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| Year : 2004 | Volume
: 52
| Issue : 1 | Page : 83-84 |
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Digital ophthalmic photography
V Vedantham
Correspondence Address:
V Vedantham
 Source of Support: None, Conflict of Interest: None  | Check |
PMID: 15132393 
How to cite this article:
Vedantham V. Digital ophthalmic photography. Indian J Ophthalmol 2004;52:83-4 |
Dear Editor,
I read with great interest the article on ophthalmic photography using a digital camera by Fogla et al.[1] The authors have to be commended for throwing more light on this less expensive yet equally effective alternative to slitlamp-based digital workstations. Many private practitioners in India routinely use this technique (private communications; eyesurgeons @ yahoo-groups.com). Being an avid enthusiast of such cameras, I would like to supplement certain points in the article.
1. Alternatives to the 995
The Nikon Coolpix 995 is a 3 Megapixel camera. There are some digital cameras with 4 mega pixels from companies such as Olympus, Sony, Casio, Toshiba and Canon that are good alternatives to the 995. While it is not possible to provide all details, the table below compares the Canon Power Shot G2 with Coolpix 995.
2. Additional tips on taking the photographs
a. The authors note that the ambient room illumination should be good enough to allow the subject to be clearly viewed on the LCD monitor. However, it is important to remember that the bright and fluid 1.8" LCD of the 995 is useable in most situations except outdoors, when all LCDs are useless. An LCD hood would come in handy in situations such as ophthalmic photography in outdoor eye camps.
b. While taking slitlamp photographs using diffuse illumination, it is better to use a light diffuser (ground glass) in front of the mirror of the slitlamp than just a wide slit beam alone.
3. Cheap alternative to Scheimpflug photography?
The authors have mentioned that they have started to use the digital camera to record posterior capsule changes following implantation of different types of intraocular lenses. This has been analysed by Scheimpflug photography in various studies. The latter is an expensive tool that has also been employed for densitometric analysis of lens opacities. It is very helpful to investigate the time course of cataract development or to detect early changes in clinical studies when cataract is suspected as a possible side effect. [2] Proficiency in use of a simple digital camera as the authors have suggested would bring research and documentation even in such areas within the reach of the common practicing ophthalmologist[Table - 1]
| References | |  |
| 1. | Fogla R, Rao SK. Ophthalmic photography using a digital camera. Indian J Ophthalmol 2003;51:269-72.  [ PUBMED] |
| 2. | Hockwin O, Dragomirescu V, Laser H, Wegener A, Eckerskorn U. Measuring Lens Transparency by Scheimpflug Photography of the Anterior Eye Segment - Principal, Instrumentation and Application to Clinical and Experimental Ophthalmology. J Cutaneous and Ocular Toxicol 1987;6:251-71. |
[Table - 1]
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| Sinha, A., Sethi, H.S., Saxena, R. | | Journal of Cataract and Refractive Surgery. 2005; 31(11): 2234-2236 | | [Pubmed] | |
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