Bailey-Lovie chart uniquely uses a constant size increase per line regardless of test distance. This statement is:

Bailey-Lovie chart uniquely uses a constant size increase per line regardless of test distance. This statement is:

• A. True
• B. False
• C. Not applicable
• D. Sometimes

Answer: (A)

The key idea is that the Bailey-Lovie chart uses equal steps in letter size from one line to the next, which creates a constant, fixed progression in logMAR between lines. Each line increases in size by the same factor, so the amount of acuity change represented by moving from one line to the next is always the same. This uniform per-line increase is built into the chart itself and is independent of where the observer stands, as long as testing is done at the chart’s specified distance with proper scaling. That consistent, line-by-line progression gives a linear, reproducible measure of visual acuity and is why this statement is true.

The key idea is that the Bailey-Lovie chart uses equal steps in letter size from one line to the next, which creates a constant, fixed progression in logMAR between lines. Each line increases in size by the same factor, so the amount of acuity change represented by moving from one line to the next is always the same. This uniform per-line increase is built into the chart itself and is independent of where the observer stands, as long as testing is done at the chart’s specified distance with proper scaling. That consistent, line-by-line progression gives a linear, reproducible measure of visual acuity and is why this statement is true.