AIM: To study forward light-scattering characteristics of calcified explanted intraocular lenses (IOLs) (Aquasense, Ophthalmic Innovation International Ontario). METHODS: The amount of light scattered by the opacified IOLs was measured using a validated in vitro set-up for angles from 1.7 degrees to 22 degrees . This set-up gives results directly comparable with straylight values as valid for the in vivo situation. RESULTS: Straylight is highest at large angles and declines steeply approaching 0 degrees angle. This corresponds to the in vivo findings that opacified IOLs cause important visual complaints but have little effect on visual acuity. At 7.5 degrees , log (s) is around 1.8 and 2.9 for the two lenses respectively. This corresponds to 8 x and 100 x increases in straylight values compared with values in young, normal eyes. CONCLUSION: High straylight values caused by opacified IOLs can explain subjective complaints of reduced quality of vision in patients with opacified implants, despite good visual acuity.
AIM: To study forward light-scattering characteristics of calcified explanted intraocular lenses (IOLs) (Aquasense, Ophthalmic Innovation International Ontario). METHODS: The amount of light scattered by the opacified IOLs was measured using a validated in vitro set-up for angles from 1.7 degrees to 22 degrees . This set-up gives results directly comparable with straylight values as valid for the in vivo situation. RESULTS: Straylight is highest at large angles and declines steeply approaching 0 degrees angle. This corresponds to the in vivo findings that opacified IOLs cause important visual complaints but have little effect on visual acuity. At 7.5 degrees , log (s) is around 1.8 and 2.9 for the two lenses respectively. This corresponds to 8 x and 100 x increases in straylight values compared with values in young, normal eyes. CONCLUSION: High straylight values caused by opacified IOLs can explain subjective complaints of reduced quality of vision in patients with opacified implants, despite good visual acuity.
Authors: Grzegorz Łabuz; Fernando Vargas-Martín; Thomas J T P van den Berg; Norberto López-Gil Journal: Biomed Opt Express Date: 2015-10-19 Impact factor: 3.732
Authors: R Khoramnia; J P Salgado; G U Auffarth; S Schmidt; A Wegner; K A Kobuch; C Winkler von Mohrenfels Journal: Ophthalmologe Date: 2012-05 Impact factor: 1.059