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Br J Ophthalmol 85:811-815 doi:10.1136/bjo.85.7.811
  • Scientific correspondence

Tritan colour contrast sensitivity function in refractive multifocal intraocular lenses

Table 1

Results of colour contrast sensitivity function testing without and with glare in a refractive multifocal IOL (Allergan SA 40N) through the distance focus (n = 15), through the near focus (n = 15) and in a monofocal intraocular lens (n = 11, Allergan SI 40 NB). (cpd = cycles per degree)

cpd SA40N distance focus SA40N near focus SI40NB
CCS function without glare in refractive multifocal IOLs and monofocal IOLs
0.5 14.59  (12.02) 15.09  (13.12) 21.37  (11.42)
1 9.45 (5.82) 10.15 (7.10) 16.20 (5.92)
3 4.24 (2.10) 4.22 (1.94) 6.76 (4.23)
6 2.97 (2.14) 2.26 (1.08) 3.63 (2.05)
11.4 0.79 (0.75) 0.95 (0.81) 1.55 (0.94)
22.8 0.27 (0.50) 0.18 (0.41) 1.11 (0.38)
CCS function with glare in refractive multifocal IOLs and monofocal IOLs
0.5 10.37 (3.75) 9.55 (2.29) 13.79 (5.22)
1 7.68 (2.64) 8.04 (3.79) 11.02 (3.29)
3 3.66 (1.34) 3.06 (2.01) 4.50 (1.87)
6 2.02 (1.08) 0.94 (0.74) 2.19 (0.69)
11.4 0.39 (0.57) 0.29 (0.52) 1.08 (0.79)
22.8 0.09 (0.30) 0.17 (0.40) 0.09 (0.30)

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