| Past Issue | Volume 8, Number 6, December 2006 | | Use of Digital Mediametry for the Evaluation of Endophthalmitis |
Yogesh Gupta,1 Meenakshi Gupta,2 S Ali Raza Rizvi,1 Mohit Gupta,1 M Mubarak Hussain2
1Institute of Ophthalmology, and 2Department of Physiology, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, India
Aims: The aim of this study was to design a digital mediameter and assess its ability to accurately diagnose and monitor the progression of endophthalmitis.
Methods: The digital mediameter consisted of a white light source and a sensitive luxmeter. To take a reading, the light sensor was placed on the cornea or adjacent sclera during the process of transillumination by a conventional Heine Transilluminator and the intensity of light emanating from the pupil was measured objectively. Transcorneal and transscleral mediametery was determined in 20 control participants with transparent ocular media and 11 patients with postoperative endophthalmitis over a 7-day treatment period. Visual acuity and ocular media transparency were also assessed.
Results: Both transcorneal and transscleral mediameter readings were significantly lower for eyes with endophthalmitis than for normal eyes. Repeated readings indicated a response to treatment in 7 patients and no response in 4 patients. Mediameter readings were negatively correlated with visual acuity and media transparency. Transscleral readings in the affected eye were significantly different from readings in the fellow eye.
Conclusions: The mediameter described is useful as an adjunct to the diagnosis and prognosis of endophthalmitis. It can also indicate response to treatment and help determine when surgical intervention is desirable. It is very simple, portable, inexpensive, and easy to use and offers a more reliable alternative to subjective assessment by conventional transillumination. The results also indicated that transscleral readings are useful even in the presence of advanced cataract or leukomatous corneal opacity.
Key words: Analytical and diagnostic technique and equipment, Cataract extraction, Endophthalmitis, Transillumination
Asian J Ophthalmol 2006; 8:245-249.
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