Introduction: Hypertension causes end organ damage however there is increasing evidence that variability and instability in blood pressure may be significant also in terms of vascular risk (PM Rothwell Curr Hypertens Rep 2011 Jun; 13(3): 177-8). Hence we hypothesize there may be a relationship between neurocardiovascular instability (NCVI) as identified on active stand (AS) and deterioration of objective visual function. Methods: Data from the first wave (2009/2011) of The Irish Longitudinal Study on Ageing (TILDA) was used. Of 8,175 participants, 5255 underwent a comprehensive health assessment in which objective visual and cardiovascular measures, including finometry data from AS were collated. Best available corrected visual acuity was assessed separately in both eyes by means of a Logmar chart and contrast sensitivity was measured using the functional acuity contrast test. Vision (better eye) was categorized using ICD 10 criteria into “normal” “mild” and “moderate-profound” vision loss. For individual demographics, mean contrast sensitivity (CS) values were determined across 5 spatial frequencies. This was also done for those whom had a > = 20mmHg drop or overshoot from baseline blood pressure at each 10 second (s) timepoint of AS. Results: Of 5255 participants 76.75% (4033) had normal vision, 21.24% (1116) had mild visual loss and 2.01% (106) had moderate to profound visual loss. In univariate analysis, mild and moderate-profound vision loss were associated with older age, female gender, lower educational attainment, smoking, self-report of eye diseases, diabetes and hypertension (all p<0.05). Mean CS values were lower for these demographics across all spatial frequencies. At each 10s timepoint across the AS, those who had a > 20mmHg drop in blood pressure had lower mean CS across all spatial frequencies. Conclusions: This preliminary analysis, in identifying lower mean CS for our chosen NCVI variable is supportive of our hypothesis and identifies confounding factors, which will be controlled for in the final model designed to answer the research question.