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Comprehensive Ophthalmology Free Papers 9. Sharma PD, Madhavi MR. A comparative study of postoperative intraocular pressure changes in small incision vs conventional extra capsular cataract surgery. Eye (Lond). 2010;24:608-12. 10. Bhallil S, Andalloussi I, Chraibi F, Daoudi K, Tahri H. Changes in intraocular pressure after clear corneal phacoemulsification in normal patients. Oman J. Ophthalmol 2009;2:111-3. Ophthalmic Cellphone Imaging System – A Costless Imaging System Dr. Murali Mohan Gurram Imaging is an important procedure for various purposes. If we want to share our clinical cases with others, the best way for that is with images. A single image can tell more tales than 100 words. In day to day professional life, we come across many interesting cases. These can be shared with students or others with good images. Imaging is very important for various purposes like teaching, documentation, patient education, progress of disease etc. Slit lamp imaging system are very expensive with MNC one being approximately 6 lakhs and indigeneous ones approximately 3.5 lakhs. Many of the private practitioners do not have this system. A digital camera can be used for the same purpose, but needs some investment, some hardware modifications and it needs to be carried. There is a search for an instrument which can give images and doesnot need any extra equipment. I found the answer in my cellphone. My Cell Phone My cellphone is Motorola A1600, which has an effective 2 MP camera. It gives a resolution of 1536 x 2048 pixels. It gives reasonably good images of anterior segment. With little learning we can capture good images of anterior segment. With little extra effort, we can even take Optic disc images. Most important of all, I need not carry any equipment, as my mobile is always in my pocket. MATERIALS AND METHODS I use an old model of Appasamy slitlamp. The imaging is an uniocular procedure. Room lights are switched off for a better contrast. The lesion is focused with necessary slitlamp adjustments. Diffuse light is used for large lesions like pinguecula and pterygium. Slit beam is used for corneal and lens sections. Retroillumination for media opacities. The illumination of slit lamp is reduced to reduce the dazzling light reflex. Lesion is seen uniocularly in both objectives. The objective with better focusing is selected. Low magnification 467
70th AIOC Proceedings, Cochin 2012 Examples of Bitot’s Spot Early Mid Classic is initially used. The cell phone camera is placed at the respective eyepiece and image PCO Slightly Displaced is seen on the mobile screen. Minor focusing adjustments are done with micro-movements of joystick. Once the image is focused, click the button to acquire the image. As many images can be taken as desired. Save the image. Next an image is taken in high magnification (10x). The image gets stored in the memory card of the phone. A memory card of 4 GB can store more than 5000 images. The images are transferred to the computer through USB ports. They can be transferred to the patients mobile with bluetooth technology (Now a days, most of the mobiles come with this technology). For the disc images, it is almost the same technique. Slitlamp illumination is not so low. Slit height is reduced to 3 to 5 mm. Use 10x. A rectangular illumination is used as a larger light will reduce the details of image. Focus 468 Festooned Pupil Blood staining of Wiegert’s ring,Ant. Post.Capsule Hyaloid face
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