TY - JOUR
T1 - Straylight in fish-eye disease
T2 - visual quality and angular dependence of straylight
AU - van de Wouw, Didrika Sahira
AU - de Jong, Bram
AU - van der Meulen, I. J.E.
AU - van den Berg, T. J.T.P.
N1 - Publisher Copyright:
© 2022 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022
Y1 - 2022
N2 - Aim: To quantify visual complaints by determining straylight values, to investigate the angular dependency of straylight, and to examine the use of straylight for clinical decision making in fish-eye disease (FED) patients. Research design and methods: Straylight was measured in 10 patients with FED using the compensation comparison method (Oculus C-Quant). Additionally, the direct comparison method was used for four patients to measure straylight at different visual angles. Results: Average straylight in untreated eyes with FED was 1.91 log(s). Penetrating keratoplasty and deep anterior Lamellar keratoplasty treated eyes had average straylight levels of 1.53 log(s) and 1.63 log(s), respectively. Straylight in FED was not strongly angle dependent. Conclusions: Straylight was highly elevated (up to 24x age normal value) although visual acuity was relatively well preserved. For several patients, complaints were severe enough to undergo corneal transplantation resulting in reduced straylight and alleviation of complaints. Straylight in FED follows relatively normal angular dependence. We conclude that straylight measurements can support clinical decision-making by quantifying complaints about reduced visual quality, even if visual acuity remains normal.
AB - Aim: To quantify visual complaints by determining straylight values, to investigate the angular dependency of straylight, and to examine the use of straylight for clinical decision making in fish-eye disease (FED) patients. Research design and methods: Straylight was measured in 10 patients with FED using the compensation comparison method (Oculus C-Quant). Additionally, the direct comparison method was used for four patients to measure straylight at different visual angles. Results: Average straylight in untreated eyes with FED was 1.91 log(s). Penetrating keratoplasty and deep anterior Lamellar keratoplasty treated eyes had average straylight levels of 1.53 log(s) and 1.63 log(s), respectively. Straylight in FED was not strongly angle dependent. Conclusions: Straylight was highly elevated (up to 24x age normal value) although visual acuity was relatively well preserved. For several patients, complaints were severe enough to undergo corneal transplantation resulting in reduced straylight and alleviation of complaints. Straylight in FED follows relatively normal angular dependence. We conclude that straylight measurements can support clinical decision-making by quantifying complaints about reduced visual quality, even if visual acuity remains normal.
KW - Angular dependence
KW - fish-eye disease
KW - keratoplasty
KW - quality of vision
KW - straylight
UR - http://www.scopus.com/inward/record.url?scp=85133852415&partnerID=8YFLogxK
U2 - 10.1080/17469899.2022.2098717
DO - 10.1080/17469899.2022.2098717
M3 - Article
AN - SCOPUS:85133852415
SN - 1746-9899
VL - 17
SP - 221
EP - 225
JO - Expert Review of Ophthalmology
JF - Expert Review of Ophthalmology
ER -