RYin (F/10) came with complaint of difficulty seeing whiteboard as her lenses have many scratches. She rests her glasses lowest on nose to see through the top part of her lenses with lesser scratches.
Vision without glasses
R: 6/45
L: 6/45+
Existing glasses of 3years
R: -4.50/-0.75×5 (6/9-)
L: -4.00/-1.00×165 (6/7.5-)
Add: +0.75
Examination shows:
R: -4.50 (6/6-) [+1.00 blur test: 6/9-] [R: right dominant eye]
L: -3.50 (6/6) [+1.00 blur test: 6/9-]
Add: +0.75
Other assessments show:
Cover Test
Distance: NMD
Near: small XP, fast recovery
Howell Card (6BD on OD)
Distance: 0 – 2 XP
Near: 6 – 8 XP
+1.00 Near: 10 – 12 XP
-1.00 Near: 4 XP
+2.00 Near: 6 – 8 XP
-2.00 Near: 0 – 2 XP
NRA
+2.25
PRA
-2.75
NPC (RAF rule)
OS deviates @6cm x6
AA (RAF rule)
R: 16.5D, 16.5D, 16.5D
L: 16.5D, 16.5D, 16.5D
Accommodation Facility (+/- 1.00)
BE: 16 cpm, difficult minus lens
R: 17 cpm, difficulty minus lens
L: 17 cpm, difficult minus lens
MEM
R: +0.50
L: +0.50
Fusional Reserves (Prism Bar)
Near, PFV: x/20/16
Near, NFV: x/14/12
Distance, NFV: x/12/10
Distance, PFV: 16/25/20 (above blur point 16, double then single)
Vergence Facility (Prism Flipper 12BO/3BI)
Near: 6 cpm (slow BO)
Distance: 6 cpm (slow BO)
Interpupillary distance, IPD = 6.1cm
