Which n notation should be used in a reading chart?

Therefore Times New Roman was selected as the standard. The N notation reading charts could be used in various distances from the eye. Thus any reference to near visual acuity in terms of N notation should be referenced with regard to the distance the patient is holding the chart from eye.

What does n-notation mean on a reading chart?

This would ensure standardization of style, length, and height of the fonts across the reading chart. Thus the N-notation represents the record of what the patient reads as per the font size (point size). Different fonts differ in height, despite the same point.

Are Jaeger charts standardised?

Unfortunately, modern Jaeger charts are not standardised, and the actual letter sizes on different Jaeger cards might vary slightly. The type scale on a modern Jaeger eye chart usually ranges from J10 (approximately 14-point type for Times New Roman font) to J1 (approximately 3-point type, Times New Roman).

What is a Jaeger eye chart?

To evaluate your near vision, your optician may use a small hand-held card called a Jaeger eye chart. The Jaeger chart consists of short blocks of text in various type sizes. A Jaeger eye chart contains several blocks of successively smaller text, generally ranging in size from J10 (large print) to J1 (very small print).