Magnitude of Visual Acuity Change with ETDRS versus Snellen ...

The ETDRS method produced higher levels of VA change compared with Snellen by around 5 letters when baseline Snellen VA was better than 20/200.

Among eyes with baseline Snellen VA of > 20/50, VA gain was significantly greater with the ETDRS method (4.9 ± 12.3 letters) compared with ...

Magnitude of Visual Acuity Change with ETDRS versus Snellen ...

However, among patients with worse baseline Snellen vision, the magnitude of VA change was greater with Snellen compared with ETDRS, whereas ...

Snellen Visual Acuity May Affect ETDRS Outcomes in Clinical Trials

Overall, there was no significant difference in mean visual acuity change from trial entry to exit between the ETDRS and Snellen methods (5 vs ...

A Comparison of Snellen Versus ETDRS Charts in Clinical Practice ...

This introduces considerable error when changing the viewing distance of the chart and leads to overestimation of vision at the lower end of acuities. Moreover, ...

Magnitude of Visual Acuity Change with ETDRS vs Snellen Testing ...

PDF | Purpose To compare visual acuity (VA) changes using standardized ETDRS best-corrected visual acuity (BCVA) and nonstandardized Snellen ...

VA Variability: Snellen Versus ETDRS Outcomes

They found that the ETDRS visual acuity scores were significantly better—and that the difference was more pronounced among eyes with worse ...

Comparison of Snellen Visual Acuity Measurements in Retinal ...

On average, clinical Snellen VA is 1 to 2 lines worse than eETDRS protocol refraction and VA testing, which may partly explain why clinical practice does not ...

Comparison of static visual acuity between Snellen and Early ...

The Bailey Lovie and ETDRS charts are similar in construction but vary in letters and the distance at which visual acuity is checked. Early treatment diabetic ...

a comparison of snellen versus ETDRS charts in clinical practice (An ...

FIGURE 5 Correlation between logarithm of the minimum angle of resolution (logMAR) visual acuity scores on Early Treatment Diabetic Retinopathy Study ...

Magnitude of Visual Acuity Change with ETDRS versus Snellen ...

Magnitude of Visual Acuity Change with ETDRS versus Snellen Testing in Clinical Trials ; Journal: Ophthalmology Science, 2024, № 2, p. 100372 ; Publisher: ...

The Relationship between the ETDRS Visual Acuity Score and the...

... The largest RCT on the subject found a MD of 2.4 ETDRS letters compared with sham [19]. Nonetheless, visual acuity measurements in intermediate AMD may vary ...

comparison with gold standard ETDRS chart measurements - Nature

Lines of each size, however, are presented only once. With a single viewing distance of 3 m and a 21.3-inch monitor, a letter acuity range of ...

Comparison of the ETDRS logMAR, 'compact reduced ... - Nature

The range of visual acuities recorded were −0.10 to 1.06 for the ETDRS, −0.13 to 1.07 for the cRLM and −0.10 to 1 for the Snellen charts. The ...

What is ETDRS®? - Precision Vision

The design of this chart allows for a logarithmic or proportional change in letter size and spacing. ... or visual acuity testing in clinical research. Am ...

Repeatability of ETDRS Visual Acuity in Children - IOVS

results. At baseline, the mean best corrected logMAR VA was 0.003 ± 0.076 (6/6 or 20/20 ± 3.8 letters) in the right eye ...

Snellen Eye Test Charts Interpretation - Precision Vision

At 4 m (the recommended distance for ETDRS charts) the accommodative demand is 0.25 Diopters and cannot be ignored. In smaller rooms, the use of ...

Computerized Repeating and Averaging Improve the Test-Retest ...

Visual inspection did not suggest that TRV was associated with the underlying acuity for either the ETDRS chart measurements or the CAMM6 test results. The mean ...

Comparison of Snellen Visual Acuity Measurements in Retinal ...

Mean (SD) protocol VA was better than clinical VA by 7.6 (9.6) letters overall, 10.7 (12.6) letters in eyes with clinical VA ≤ 20/50 (n = 376), and 5.8 (6.6) ...

A Comparison of Distance Visual Acuity Testing using a Standard ...

Similarly, the mean logMAR visual acuity scores at 2 meters obtained from the ETDRS chart and the iPad were -0.049 and -0.089 respectively. The logMAR visual ...