TY - JOUR T1 - Contrast sensitivity evaluation with filter contact lenses in patients with retinitis pigmentosa: a pilot study JO - Journal of Optometry T2 - AU - Carracedo,Gonzalo AU - Carballo,Jesús AU - Loma,Elena AU - Felipe,Gema AU - Cacho,Isabel SN - 18884296 M3 - 10.1016/S1888-4296(11)70055-3 DO - 10.1016/S1888-4296(11)70055-3 UR - https://www.journalofoptometry.org/en-contrast-sensitivity-evaluation-with-filter-articulo-S1888429611700553 AB - PurposeThe aim of this pilot study was to test whether retinitis pigmentosa patients would benefit from filter contact lenses as an effective optical aid against glare and photophobia. MethodsFifteen subjects with retinitis pigmentosa were enrolled in this study. All of them were evaluated with filter soft contact lenses (MaxSight), filter glasses (CPF 527) and without filters (control). All patients were assessed for the three aid conditions by means of best corrected visual acuity (BCVA), contrast sensitivity (without glare and with central and peripheral glare)(CSV-1000) and a specific subjective questionnaire about quality of vision. ResultsBCVA was slightly better with filters than without filter but the differences were not statistically significant. Contrast sensitivity without glare improved significantly with the contact lenses (p<0.05). The central glare had significant differences for the frequencies of 3 cpd and 18 cpd between the contact lens filter and the control group (p=0.021 and p=0.044, respectively). For the peripheral glare contrast sensitivity improved with contact lens versus control group for highest frequencies, 12 and 18 cpd (p<0.001 and p=0.045, respectively). According to the questionnaire the contact lens filter gave them more visual comfort than the glasses filter under the scenarios of indoors glare, outdoors activities and indoors comfort. ConclusionThe filter contact lenses seem to be a good option to improve the quality of vision of patients with retinitis pigmentosa. ER -