| Summary: | Ana Marta,1,2 João Heitor Marques,1 Daniel Almeida,1 Diana José,1 Irene Barbosa1,2 1Department of Ophthalmology, Centro Hospitalar Universitário do Porto (CHUPorto), Oporto, Portugal; 2Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Oporto, PortugalCorrespondence: Ana MartaDepartment of Ophthalmology, Centro Hospitalar e Universitário do Porto, Largo do Prof. Abel Salazar, Porto, 4099-001, PortugalEmail analuisamarta2@gmail.comPurpose: To analyze the visual performance in contact lens wearers with keratoconus.Methods: A retrospective study including contact lens (CL) wearers was performed. The current best-corrected visual acuity with contact lens (BCVA-CL) and with spectacles (BCVA-S) correction, contrast sensitivity (CS) (by Metrovision-MonPack3®), analysis of light scattering in the retina and vision break-up time (HD Analyzer®), and corneal tomography (Oculus Pentacam® HR) were evaluated.Results: This study included 96 eyes of 59 patients with Keratoconus. Rigid gas permeable contact lenses (RGPCL), hybrid contact lenses (HCL), and silicone hydrogel/hydrogel contact lenses (HGCL) were fitted in 67, 17, and 12 eyes, respectively. Dynamic objective scatter index (OSI) (p = 0.024), minimum OSI (p = 0.037) and maximum OSI (p = 0.040) were significantly better with RGPCL and worse with HGCL. Mean CS in photopic conditions was significantly worse with HGCL and better with HCL (p = 0.006), without differences in mesopic conditions (p = 0.121). RGPCL wearers showed a higher mean K (p = 0.020), and a lower corneal thickness at the thinnest point (p=0.011).Conclusion: Visual quality varied significantly with different types of CL. Although RGPCL was fitted in patients with worse Pentacam tomographic parameters, RGPCL was associated with a better dynamic visual quality.Keywords: keratoconus, contact lens, visual performance, optical quality
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