Congenital Aqueductus Stenosis:
MCC of congenital obstructive hydrocephalus.
Color blindness (red-green):
can't distinguish shades of red and green (usually blue-green)
Duchene’s muscular Dystrophy:
dystrophin gene mutation (Xp21), absent dystrophyn protein, MC & severe of muscular dystrophies, normal until 5yo, short life span (<30yo), progressive muscle weakness, calf pseudohypertrophy, <3 failure, arrythmias, respiratory insufficiency and infxs (decreased mucociliary clearence). Pneumonias CC of death.