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Year : 2020  |  Volume : 68  |  Issue : 5  |  Page : 875-879

An innovative and simple method, clinically comparable to high-definition optical coherence tomography in quantifying posterior segment lesions in the retina

1 Department of Ophthalmolgy, Believers Church Medical College Hospital, Kuttapuzha, Thiruvalla, Kerala, India
2 Department of Community Medicine, Believers Church Medical College Hospital, Kuttapuzha, Thiruvalla, Kerala, India

Correspondence Address:
Dr. Leena Mariyam Varghese
Department of Ophthalmology, Believers Church Medical College Hospital, St Thomas Nagar, Kuttapuzha, Thiruvalla - 689 103, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijo.IJO_1188_19

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Purpose: To introduce a simple and inexpensive method using a fundus contact lens and a reticle, to measure retinal lesions comparing it with values obtained with high-definition optical coherence tomography (HD-OCT). This study considers optic disc as the object for comparison. Methods: Patients underwent routine ophthalmologic examination and their horizontal optic disc diameter was measured, both with the reticle and OCT. For measurement with reticle a simple equation was deduced, x = 0.7y, where x corresponds to the actual image size and y to the reticle scale reading in millimeters. Results: An aggregate of 127 eyes of 75 patients were dilated and examined. The calculated mean diameter according to OCT was 1.639 mm (standard deviation = 0.179) and that assenting to reticle was 1.713 mm (standard deviation = 0.175), with a difference in mean being 0.089 mm. Conclusion: Values obtained by this new method was found to be comparable with the OCT values for retinal measurements, useful for ophthalmologists who cannot afford expensive and sophisticated machines.

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