VISUAL DEVELOPMENT Flashcards
Can fix and follow a light source, face or large, colorful toy.
Very soon after birth
Fixation is central, steady and maintained, can follow a slow target, and converge, preference of looking at face.
1 month
binocular vision and eye coordination, eyes follow a moving light or face, responsive smile.
3 months
Reaches out accurately for toys.
6 months
look for hidden toys.
9 months
Picture matching
2 years
Letter matching of single
letters (e.g., Sheridan Gardiner)
3 years
Snellen chart by matching or naming
5 years
Blinking (to light stimulus)
Birth
Vestibulo-ocular
1 week
Small saccades
2 weeks
Large saccades, pursuit, bifoveal fixation, convergence
2 months
Uniocular fixation
3 months
Fusional vergence, sensory fusion, stereopsis
4 months
Accomodation
6 months
Pupillary light reaction
30 weeks gestation
Blink response to visual stimuli
2-5 months
Fixation
2 months
Smooth pursuit
6-8 weeks
Saccades
1-3 months
Optokinetic nystagmus(OKN)
Developed by 2-4 month
Ocular Alignment
1 month
Foveal maturation
4 months
Optic nerve myelination
7 months to 2 yrs
Light perception
Newborn
Eye contact with mother
4-7 weeks
Fixates and follows interesting bright coloured objects
4-12 weeks
Change expression smiles and cries
3 months
Reach objects using vision
3-4 months
Crawling and later walking avoiding objects
6-9 months
