Page 80 - Microsoft Word - NCC Book.doc

Two ordinary 25 watt internally frosted (perl) lamps are fixed vertically, one on each side,
at a horizontal distance of 12 inches from the vertical plane normal to and bisecting the
card. One lamp is placed higher than the other, one being opposite the junction of the upper
and middle thirds, and the other opposite the junction of the middle and lower thirds of the
card. Opaque non-reflecting screen, preferably cylindrical, having a matt white interior, are
fitted, so as to prevent direct light from the lamps reaching the candidate’s eyes. The
distance between the test types and the candidate’s eyes is to be 20 feet.

Daylight is to be excluded while the sight testing is in progress and the testing
compartment is to be moderately illuminated by artificial light.

Glaring lights and –other bright objects should not be allowed to interfere with the
candidate’s field of vision and extreme contrast between the illuminated test card and the
background is to be avoided.

The lamps should be renewed at suitable intervals.

Test cards are not to be permanently exposed, as they become discoloured and may
be memorized by prospective candidates.

(c) Near vision will be tested with Snellen types, each eye being tested separately.
The test card should be well illuminated with natural or artificial light, and
held by the candidate at comfortable reading distance.

(d) (Colour perception) :

Colour perception is to be determined by Jshihara Cards and Martin Lantern.

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Copy of Government of India, Ministry of Defence letter
th
No.0162/53/NCC/1754/B/D (IS & MED), dated 9 April, 1953 as amended by
letters.

rd
No.0162/53/NCC/2610/B/D/ (IS & MED), dated 3 June, 1953.
No.0162/54/NCC/1515/D/ (IS)/54 dated 15th March, 1954.
th
No.0162/54/NCC/4452/D/ (IS)/54 dated 10 July, 1954
th
No.0162/A/56/NCC/ (Coord), dated 14 July 1956
th
No.0162/A/3/56-62/NCC-Pers (A)/1201-US/D (GS-III) of 8 June 1962
th
No.0162/64/E/NCC-Pers (A) 482/B/D/ (GS-IV) dated 11 Mar 65.
No.0162/72/NCC-Pers (A)/968/D (GS-II) dated 10th Apr 72.

To
The Director,
National Cadet Corps,