Ms Tan (F/38) came for eye examination, she is full-time contact lens wearer for many years already (wearing power -2.50 in both eyes) . Vision with existing glasses is fine. She rarely wears her specs.. she reported having headache easily wearing specs.
Vision without glasses
R: 6/45
L: 6/45
Vision with existing glasses
R: -2.75/-0.25×180 (6/7.5- 6/6-)
L: -3.00 (6/6)
Examination shows:
R: -2.75/-0.50×180 (6/6) (+1.00 blur lens test: 6/9-) (R: right dominant eye)
L: -3.00 (6/6) (+1.00 blur lens test: 6/9-)
Other assessments show:
Cover Test
Distance: NMD
Near: small XP, fast recovery
Howell Card (6BD on OD)
Distance: 0
Near: 6 – 8 XP
+1.00 Near: 8 – 10 XP
-1.00 Near: 2 – 4 XP
NRA
+0.50 (OD blur, OS clear)
PRA
-1.00 (OD blur, OS blur)
NPC (RAF rule)
TTN, TTN, TTN, TTN
AA (RAF rule)
R: 38yo, 38yo
L: 38yo, 38yo
Accommodation Facility (Flipper +/- 0.50)
BE: difficult plus lens
R: difficult plus lens
L: difficult minus lens
MEM
R: +0.75
L: +0.50
Fusional Reserves (Prism Bar)
Near, PFV: x/25/16
Near, NFV: x/18/12
Distance, NFV: x/12/8
Distance, PFV: x/25/20
Vergence Facility (Prism Flipper of 12BO & 3BI)
Near: 13 cpm
Distance: 13 cpm
Slit Lamp Examination
R: no neovas
L: no neovas
Fluorescein staining
R: -ve staining
L: -ve staining
Contact lens
R: -2.75
L: -2.75