Stiles J., Polzin D. and Bistner S.I.
J Am Anim Hosp Assoc, 1994. 30(6): p.564-572.
Thirty-six cats with either chronic renal failure or hyperthyroidism were examined. Indirect systemic blood pressure and ophthalmic findings were recorded for each cat. Fifteen of 23 cats (65%) with chronic renal failure had blood pressure readings consistent with hypertension. Twelve of these 15 (80%) had hypertensive retinopathy. Three of 13 cats (23%) with hyperthyroidism had blood pressure readings consistent with hypertension. One of these three cats (33%) had hypertensive retinopathy. The most common findings of hypertensive retinopathy were hemorrhages and intraretinal serous exudates.