2000 series revised ETDRS Translucent Charts
Description:These revised charts incorporate the slight change in the difficulty score for each of the 10 Sloan letters derived from the best corrected visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per...Reduced 2000 series revised ETDRS Translucent Charts
Description:These revised charts incorporate the slight change in the difficulty score for each of the 10 Sloan letters derived from the best corrected visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per...Thompson Surgical Radiotranslucent Anterior Lumbar Retractor System
Description:Thompson surgical radiotranslucent anterior lumbar retractor system....