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Fig. 1 | Eye and Vision

Fig. 1

From: Keratoconus cone location influences ocular biomechanical parameters measured by the Ocular Response Analyzer

Fig. 1

Example waveform parameters. (a) Area of the first peak (p1area) and area of the second peak (p2area), (b) width of the first peak (w1) and width of the second peak (w2), and (c) height of the first peak (h1) and height of the second peak (h2) parameters identified on a representative pressure-applanation waveform generated by the Ocular Response Analyzer. The green traces represent the air pressure delivered to the cornea. The red traces represent the number of photons reflected off the corneal surface and into the infrared light sensor. Peak 1 occurs during first corneal applanation, which happens during inward deformation; and Peak 2 occurs during second corneal applanation, which happens during the outward recovery after cessation of the air puff. The waveform parameters are indicated in purple. The dark blue solid boxes mark the location along the pressure curve where the peaks of the infrared waveform occur. WS is wave score

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Eye and Vision

ISSN: 2326-0254