Shan (F/22) came for eye examination, with complaint of slight blurry far vision with existing glasses of 1year. She is full-time contact lens wearer(wearing contact lens without astigmatism/”san guang”/silau), and she has blurry near vision after 2-3hours of computer work in which she needs to take a break to relieve.
Vision without glasses
R: cannot guess 6/120
L: cannot guess 6/120
Vision with existing glasses of 1year (previous spec were -3.50 & -3.75)
R: -3.75/-1.25×10 (6/7.5-, 6/6-)
L: -4.00/-1.25×175 (6/7.5-, 6/6-)
Examination shows: (Delay Fogging)
R: -4.00/-1.25×5 (6/6) (+1.00 blur lens test 6/12+2) [R: right dominant eye] R>L
L: -4.25/-1.25×180 (6/6) (+1.00 blur lens test 6/12+2)
Near: L>R
Other assessments show:
Cover Test
Distance: NMD
Near: small EP, fast recovery
Howell Card (6BD on OD)
Distance: 0 – 1 EP
Near: 3 – 5 EP
+1.00 Near: 0 (arrow paced around 0, touching slightly on yellow & blue)
NRA
+2.75
PRA
-0.50
Accommodation Facility (Flipper +/- 1.50)
BE: 11 cycle per minit(cpm), difficult with minus lens (2nd lens)
R: 10 cycle per minit(cpm), difficult with minus lens(2nd lens)
L: 11 cycle per minit(cpm), difficult with minus lens(2nd lens)
MEM
R: +0.75
L: +0.75
NPC (RAF rule)
TTN, TTN, TTN
AA (RAF rule)
R: 20 YO, 20 YO, 20 YO
L: 20 YO, 20 YO, 20 YO
Fusional Reserves (Prism Bar)
Near, NFV: x/12/8
Near, PFV: x/20/18 (break point@12, 14, 16 – double was seen initially, after blink target became single)
Contact lens Colour Toric
R: -3.75/-1.25×180
L: -3.75/-1.25×180
