90% of Glaucoma goes undiagnosed until severe loss of eyesight in developing nations. State-of-the-art devices include OCT-Optical Coherence Tomography, Fundus Photography, Visual Field Perimetry, Tonometry, or Intraocular pressure measurement. However, these devices are big, bulky, fragile, difficult to operate, and expensive. They are available only in tertiary care centres.
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