Techniques Of Vision Examination
Vision Examination
A major proportion of the vital sensory input
required for flying an aircraft is visually
acquired & therefore, a
healthy and focused visual apparatus
is an essential requirement.
Distant Vision Testing
Near Vision
The visual
standards recommended are:
Class I
Distant Visual Acuity
(with or without correction)
Near Visual Acuity
(with or without correction)
Class II
Distant Visual Acuity
(with or without correction)
Near Visual Acuity
(with or without correction)
(i)
Over- or under-treatment of the condition may
occur, requiring additional surgery, contact
lens, or glasses.
(ii)
Problems with a decrease in contrast
sensitivity, and even with 6/6 vision, objects
may appear fuzzy or gray.
(iii)
Corneal scarring, permanent warping of the
cornea and an inability to wear contact lenses.
(iv)
Flap complications.
(v)
Dryness. Assessment of Visual Fields By
confrontation is adequate. In case of doubt
(congenital or acquired ptosis, corneal
opacities, suspected glaucoma, retinal pathology
etc), Humphrey’s Automated Perimetry may be done
under supervision of ophthalmologist. General Points to note
The function of the eyes and adnexa shall
be normal. No active pathological condition,
acute or chronic, nor any sequelae of surgery or
trauma of eyes or adnexa likely to reduce proper
visual function. Some examples are as follows:
Ø
Eyelids:
Blepharoptosis interfering with vision is
a cause for unfitness.
Ø
Conjunctiva: Progressive Pterygium.
Ø
Cornea: Opacities affecting vision.
Ø
Keratoconus
Ø
Lens: Lenticular opacities interfering with
vision
Ø
Pupil:
Gross pupillary abnormalities e.g.
mydriasis, anisocoria or irregularity.
Ø
Glaucoma / Uveitis.
Ø
Macular scarring, maculopathy, Retinal
detachment, Retinal pigmentary dystrophy
(Retinitis pigmentosa), Optic disc oedema /
atrophy, Peripheral retinal degenerations,
Vasculopathies, haemorrhage and exudates
|
Return To Aeromedical Consultation Home Page |