Long-sight, or hypermetropia, signifies that the eyeball is too short or the lens too flat.
Ophthalmoscopically with atropine the same degree of hypermetropia.
Limits of error in the subjective and objective determination of hypermetropia.
Hypermetropia was found then in 47 per cent of all the cases.
It is important to notice that Donders' theory makes convergent squint appear as almost a necessary consequence of hypermetropia.
Donders declares no other conclusion to be possible, than this, that the hypermetropia is the cause of the squint.
Asthenopia, which occurs in children in connection with hypermetropia, is nearly always accompanied by defective vision.
In full acuity of vision even high degrees of hypermetropia are no trouble to children.
According to this the percentage of the hypermetropia (including doubtful cases) amounts to 66 per cent.
As a rule preponderance of the interni in hypermetropia leads eventually to convergent squint even in childhood.