H
  • Hydrocephalus - a condition that results in raised pressure within the skull.
  • Hypermetropia / hyperopia - (far or long-sightedness) is a visual defect in which objects appear blurred because their images are focused behind the retina rather than on it.
  • Hypertropia - a type of vertical squint.
I
  • Infantile esotropia - a large angle convergent squint that develops within the first 6 months of life.
  • Inferior oblique - a muscle which moves the eye upwards when the eye is turned towards the nose.
  • Inferior rectus - lower muscle of the eye.
  • Intermittent distance exotropia - a type of intermittent divergent squint.
L
  • Lateral rectus - outer muscle of the eye.
M
  • Medial rectus - inner muscle of the eye.
  • Myopia - (near or short-sightedness) is a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than on it.
N
  • Nystagmus - fast , high frequency eye movements.