Functional Assessment of Vision
Thursday 8 and Friday 9 March
Assessment of Functional Vision Tools
Alison Duthie
Function |
Suggested tools |
Awareness of light |
Dark room with ultraviolet light, fluorescent cloth, white gloves. Then red torch and white torch. Flashing/still |
|
Blinds, fences and trees in sunlight |
Attention to light and pursuit |
Dark room. Torches, fluorescent materials in UV light. Bells |
Pupil dilation, nystagmus |
Small torch with observation only. |
Squint |
Prisms |
Pursuit |
Finger puppet, toy car, ball, bubbles, moving people |
Sacchades |
Finger puppet and small toys |
Acuity: distance |
Mask, tinsel wig, black/white checks. Kay Pictures. Precision Vision Symbols |
Acuity: near |
Lea Gratings, Cardiff Cards, 100s and 1000s, facial recognition/expression |
Contrast |
Precision Vision: Hiding Heidi or symbol contrast charts. Choc button on contrasting/non-contrasting cloths |
Fields of vision: upper |
Yellow and black spinning pom-pom |
Fields: lower |
Stycar ball on stick |
Complexity |
Choc button then 100s and 1000s on plain then patterned cloth |
Crowding |
Precision Vision Single symbols and crowded symbols |
Movement |
Observation, moving toys |
Dark Adaptation |
Precision Vision tiles |
Colour Vision |
Precision Vision Colour Test |