Grating Visual Acuity With Teller Cards Compared With Snellen Visual Acuity in Literate Patients

The Teller Acuity Cards Are Effective in Detecting Amblyopia

“…As in other studies, the results of this study demonstrate that among amblyopic eyes, grating acuity tests provided finer estimates of visual acuity than optotype acuity tests,10,13,15–17 and the difference between the measures was greater with increasing severity of amblyopia 10,13,15,17. The disagreement between estimates of grating and optotype acuity is well documented and has been attributed to differences in the nature of the two tests, including differences in testing distance,13 size of the visual targets,16 and difficulty of the tasks 13.…”

“…Specificity of the TAC under the present criteria was 74%, lower than reported previously (91%) 13. However, we believe that this specificity is acceptable for a clinical test.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%) 10,13. Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%). 10,13 Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly. Moreover, a preliminary analysis indicated that with the lone exception of anisometropic amblyopia, sensitivity was high across all amblyopia subtypes and levels of severity.…”

The Teller Acuity Cards Are Effective in Detecting Amblyopia

“…As in other studies, the results of this study demonstrate that among amblyopic eyes, grating acuity tests provided finer estimates of visual acuity than optotype acuity tests,10,13,15–17 and the difference between the measures was greater with increasing severity of amblyopia 10,13,15,17. The disagreement between estimates of grating and optotype acuity is well documented and has been attributed to differences in the nature of the two tests, including differences in testing distance,13 size of the visual targets,16 and difficulty of the tasks 13.…”

“…Specificity of the TAC under the present criteria was 74%, lower than reported previously (91%) 13. However, we believe that this specificity is acceptable for a clinical test.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%) 10,13. Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%). 10,13 Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly. Moreover, a preliminary analysis indicated that with the lone exception of anisometropic amblyopia, sensitivity was high across all amblyopia subtypes and levels of severity.…”

Validation of the Waterloo Differential Visual Acuity Test (WatDAT) and Comparison With Existing Pediatric Tests of Visual Acuity

“…In the present study, the CAT and TAC were found to overestimate VA measures approximately by 0.4 and 0.2 logMAR, respectively; that is, these two PL tests have poor agreement with ETDRS. Significant overestimation has been reported previously for TAC 6 and the CAT. 8 , 9 , 23 Paudel et al 9 reported even greater disparities between the CAT and ETDRS with spherical and astigmatic blur.…”

The Teller Acuity Cards Are Effective in Detecting Amblyopia

“…As in other studies, the results of this study demonstrate that among amblyopic eyes, grating acuity tests provided finer estimates of visual acuity than optotype acuity tests,10,13,15–17 and the difference between the measures was greater with increasing severity of amblyopia 10,13,15,17. The disagreement between estimates of grating and optotype acuity is well documented and has been attributed to differences in the nature of the two tests, including differences in testing distance,13 size of the visual targets,16 and difficulty of the tasks 13.…”

“…Specificity of the TAC under the present criteria was 74%, lower than reported previously (91%) 13. However, we believe that this specificity is acceptable for a clinical test.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%) 10,13. Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%). 10,13 Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly. Moreover, a preliminary analysis indicated that with the lone exception of anisometropic amblyopia, sensitivity was high across all amblyopia subtypes and levels of severity.…”

Validation of the Waterloo Differential Visual Acuity Test (WatDAT) and Comparison With Existing Pediatric Tests of Visual Acuity

“…In the present study, the CAT and TAC were found to overestimate VA measures approximately by 0.4 and 0.2 logMAR, respectively; that is, these two PL tests have poor agreement with ETDRS. Significant overestimation has been reported previously for TAC 6 and the CAT. 8 , 9 , 23 Paudel et al 9 reported even greater disparities between the CAT and ETDRS with spherical and astigmatic blur.…”

The Teller Acuity Cards Are Effective in Detecting Amblyopia

“…As in other studies, the results of this study demonstrate that among amblyopic eyes, grating acuity tests provided finer estimates of visual acuity than optotype acuity tests,10,13,15–17 and the difference between the measures was greater with increasing severity of amblyopia 10,13,15,17. The disagreement between estimates of grating and optotype acuity is well documented and has been attributed to differences in the nature of the two tests, including differences in testing distance,13 size of the visual targets,16 and difficulty of the tasks 13.…”

“…Specificity of the TAC under the present criteria was 74%, lower than reported previously (91%) 13. However, we believe that this specificity is acceptable for a clinical test.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%) 10,13. Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly.…”

“…Following age-appropriate grating acuity criteria, grating acuity yielded a sensitivity of 80%, much higher than reported previously (15 to 50%). 10,13 Although our findings confirm that children with amblyopia possess finer grating acuity than optotype acuity, the majority scored below age-appropriate norms and were identified correctly. Moreover, a preliminary analysis indicated that with the lone exception of anisometropic amblyopia, sensitivity was high across all amblyopia subtypes and levels of severity.…”

Validation of the Waterloo Differential Visual Acuity Test (WatDAT) and Comparison With Existing Pediatric Tests of Visual Acuity

“…In the present study, the CAT and TAC were found to overestimate VA measures approximately by 0.4 and 0.2 logMAR, respectively; that is, these two PL tests have poor agreement with ETDRS. Significant overestimation has been reported previously for TAC 6 and the CAT. 8 , 9 , 23 Paudel et al 9 reported even greater disparities between the CAT and ETDRS with spherical and astigmatic blur.…”