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vision in one eye or both eyes is less than 6/12 glasses giving an acuity of at least 6/6 in the defective eye or eyes shall be worn while exercising the privileges of the licence;
(b) a near visual acuity of Jaeger 1 in each eye with correct-
ing glasses if necessary;
(c) not more than +2.25 dioptres of hypermetropia ;
(d) not more than dioptre of hyperphoria:
(e) not more than 6 dioptres of esophoria;
( not more than 6 dioptres of exophoria ;
(g) accommodation within ±3 dioptres of the average for
the age;
(k) normal fields of vision.
204. Visual Standard No. 2. to have:
*
The applicant shall be required
(a) a distant visual acuity of at least 6/60 in each eye separately without correction: provided that one eye is capable of correction to 5/6 and the other to 6/r8 and if the uncorrected vision in one eye or both eyes is less than 6/12 glasses giving an acuity of at least 6/6 in one eye and at least 6/18 in the other eye shall be worn whilst exercising the privileges of the licence;
(b) a near visual acuity of Jaeger 1 in the better eye and Jaeger & in the other eye with correcting glasses if necessary;
(e) accommodation within 3 dioptres of the average for
the age:
(d) normal fields of vision.
205. Visual Standard No. 3---The applicant shall be required to have:
(c) a distant visual acuity of at least 6/60 in each eye separately without correction: provided that one eye is capable of correction to 6/6 and the other to 6/12 and if the uncorrected vision in one eye or both eyes is less
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than 6/12 glasses giving an acuity of at least 6/6 in one eye and at least 6/12 in the other eye shall be worn whilst exercising the privileges of the licence;
(b) a near vision of Jaeger 1 in the better eye and Jacger 8
in the other eye with correcting glasses if necessary;
(c) ocular muscle balance giving full movements of each eye
with no diplopia in any part of the visual field; (d) normal fields of vision,
COLOUR PERCEPTION REQUIREMENTS.
206. The measurement of colour perception for Colour Percep→ tion Standard No. 1 should be made by means of pseudo- isochromatic plates or a suitable lantern. The measurement for Colour Perception Standard No. 2 should be made by means of a suitable lantern. When a lantern is used it should present the light, transmitted by coloured screens lighted at five lux, for one second and seen at a distance of twenty feet in an angle of three minutes.
207. Colour Perception Standard No. 1- -The applicant shall be required to have normal colour perception.
208. Colour Perception Standard No. 2-The applicant shall be required to be able to distinguish easily signal red, signal green, and white.
HEARING REQUIREMENTS.
209. The meastirement of the auditory acuity in the first three standards detailed below will be made by means of a standard pure tone audiometer in a quiet room, that is, a room in which the intensity of the background noise is less than fifty decibels as measured by a sound level meter.
210. Hearing Standard No. 1.-The applicant shall be required not to have a loss in either ear of more than twenty decibels at any one of the four frequencies, 500, 1,000, 2,000 and 3.000 cycles per second.
211. Hearing Standard No. 2.-The applicant shall be re- quired not to have a loss in either ear of more than twenty decibels at any one of the three frequencies, 500, 1,000 and 2,000 cycles per second nor of more than forty decibels at the frequency of 3,000 cycles per second,
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