Yu Sheng (M/17) came for eye examination, vision with existing glasses is fine seeing far & she removes glasses to see near. She complains about tired eyes & lag in focusing after removing glasses to see near.
Vision without glasses
R: 6/45-
L: 6/45
Vision with existing glasses
R: -3.25/-0.75×165 (6/7.5- 6/6-)
L: -3.50/-1.00×180 (6/6)
Examination shows:
R: -3.50/-0.75×165 (6/6) (+1.00 blur lens test: 6/12- 6/9- 6/7.5-) (R: right dominant eye)
L: -3.50/-0.75×180 (6/6) (+1.00 blur lens test: 6/12- 6/9- 6/7.5-)
Add: +0.50
Other assessments show:
Cover Test
Distance: NMD
Near: small XP, fast recovery
Howell Card (6BD on OD)
Distance: 0
Near: 8 – 10 XP
+1.00 Near: 12 XP
-1.00 Near: 4 – 6 XP
NRA
+0.75 (alt monocular occlusion: OD blur, OS blur)
PRA
-0.50 (alt monocular occlusion: OD clear, OS blur)
NPC (RAF rule)
8/10cm, 8/10cm, 8/10cm, 8/12cm, 8/12cm, 8/12cm
AA (RAF rule)
R: 17yo, 17yo, 17yo
L: 17yo, 17yo, 17yo
Accommodation Facility (Flipper +/- 1.50)
BE: difficult minus lens
R: difficult plus lens
L: difficult minus lens
MEM
R: +0.50
L: +0.50
Fusional Reserves (Prism Bar)
Near, PFV: 12/25/12 (above blur point 12, double then single)
Near, NFV: x/18/16
Distance, NFV: x/8/6
Distance, PFV: x/14/10
Vergence Facility (Prism Flipper of 12BO & 3BI)
Near: 6 cpm [slow BO(>difficult) & BI]
Distance: 8 cpm (slow BO & BI)