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DBR is an Ultrasound A-Scan diagnostic procedure, which involves the determination of axial length of the eye (the distance between the anterior part of the eye and the posterior part of the eye).
A-Scan is predominantly performed prior to cataract surgery to calculate the power of the Intra-ocular lens (IOL), which replaces the cataractous lens. The IOL power calculation is also based on the keratometry reading (measures the corneal curvature).
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Other applications include
- High myopia
- Anisometropia (difference in the refractive
error between the two eyes)
- Nanophthalmos
- Anterior Chamber Depth measurement
in certain types of glaucoma etc
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