Mr Ng HL (M/47) came for eye examination, with complaint of glaring during night driving & eye pain especially left eye after seeing phone for some time with existing reading glasses. He finds his far vision is better without glasses.
Unaided Vision
R: 6/6
L: 6/6
Existing glasses 1+year (FH worn higher)
R: +0.50
L: +0.50
Add: +2.00
Examination shows:
R: +0.25 (6/6) (+1.00 blur lens test: 6/9-) [R: right dominant eye]
L: +0.25 (6/6) (+1.00 blur lens test: 6/6-) L>R
Add: +1.75 (R>L)
Other assessments show:
Cover Test
Distance: NMD
Near: small XP, fast recovery
Howell Card
Distance: 0
Near: 6 XP
+1.00 Near: 14 – 16 XP
-1.00 Near: 2 – 4 XP
NRA
+1.00
PRA
-0.50
NPC (RAF rule)
10/16cm, 10/16cm, 12/18cm, 12/18cm, 14/20cm, 14/20cm
AA (RAF rule)
R: 46yo, 46yo, 46yo
L: 47yo, 47yo, 47yo
NPC (RAF rule) with Add: +2.25
10/14cm, 10/14cm, 10/14cm, 10/14cm
Accommodation Facility (Flipper +/- 0.50)
BE: 8cpm, difficult minus lens
R: difficult plus lens
L: difficult plus lens
MEM
R: +0.25
L: +0.25
Fusional Reserves (Prism Bar)
Near, NFV: 18/25/18
Near, PFV: 20/35/20
Distance, NFV: x/6/4
Distance, PFV: 12/35/12
Vergence Facility (Prism Flipper of 12Base Out & 3Base In)
Near: 6 cpm [slow BO & BI(more difficult)]
Distance: 8 cpm [slow BO & BI(more difficult)]
Interpupillary distance, IPD = 7.0cm
Modified
R: +0.25
L: +0.25
Add: +2.00
