My Cart My Account Customer Care
world leader in quality eye charts
Specials and New Products Specials and New Products Products About Precision Vision Contact Us Catalog Articles Site Map Home
products

Pediatric Tests & Products


Home » Products » Pediatric Tests & Products

• Test Charts

• Preferential Looking

• Fixation and Occluders

HOTV Response Key Kit

HOTV Response Key Kit

Cat. No. 2011-12

Patti Pics™ Response Key Kit

Patti Pics™ Response Key Kit

Cat. No. 2517

 

Eye tests for children are important and we have many tools to make your job accurate and efficient. With vision screening for children, recognition of letters and numbers is not trivially easy. Using these symbols may underestimate their acuity by measuring a combination of acuity and cognitive development. A simplified chart with only the symmetrical letters H, O, T and V (hotv) may overcome this problem or the use of directional symbols, such as tumbling E’s and Landolt C’s. Here the child does not need to name the symbol, but merely indicate its direction. Pictures are a third option. Precision Vision has developed the Patti Pics symbols, a series of 5 stylized pictures, designed on Snellen’s 5x5 grid and calibrated for equal recognizability with Sloan letters. Other options available through Precision Vision are fixation and occluders, and preferential looking tools. Disposable occluders are directed toward pediatric vision testing. Each occluder has a Patti Pics face and a place for the child's name. This helps to make pediatric vision testing more fun for the child, and easier for the adult.