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. 1999 Jan;83(1):92–97. doi: 10.1136/bjo.83.1.92

Figure 9  .

Figure 9  

Ray diagram for theoretical determination of the radius of meniscus curvature. T=target; C=centre of the expected circular portion of the meniscus; I=image; F=focal point of the convex meniscus mirror; u=target distance; v=image distance; r=radius of meniscus curvature; f=focal distance.