The effects of cardiac stenting on the organ of vision in patients with chronic ischemic optic neuropathy

Abstract

Purpose. To evaluate the effect of coronary artery stenting on the functional state of organ of vision in patients with chronic ischemic optic neuropathy (CION). Material and methods. 33 patients (53 eyes) diagnosed with CION aged 51 to 85 years, average 66.78±1.54 years, who underwent stenting of the coronary arteries. Results. Stenting of the coronary arteries did not affect on BCVA parameters, the percentage of pupil contraction increased from 9.57±0.49 to 9.74±0.46 ms (p<0.05), the recovery of the sympathetic phase of the pupil’s reaction to light accelerated from 83.79±0.44 to 83.56±0.43 ms (p<0.05), a decrease in IACG was recorded from 13.39±4.67 to 7.01±0.56 mm Hg. Art./ mm3 (p<0.05), negative dynamics of CFSM in green color from 33.5±0.8 to 33.06±0.73 after 1 month and to 33.17±0.75 after 3 months from initial values, deterioration of static perimetry after 3 months from 94.60±0.97 to 93.17±1.88 (p<0.05), narrowing of kinetic perimetry to green stimulus after 1 month from 267.48±13.96 up to 267.48±13.96 gr. (p<0.05). Conclusion. In the subjects, cardiac symptoms predominated rather than visual ones. In patients who underwent stenting of the coronary arteries, BCVA did not change and remained at the same level throughout the entire observation period; according to ultrasonography of the orbital vessels, there was an insignificant redistribution of blood flow in the ophthalmic artery basin; IACG significantly decreased by 2 times after 1 month (p<0.05), the indicator of CFSM for green color worsened in long-term follow-up (p<0.05), negative dynamics were recorded according to the program of static perimetry and kinetic perimetry for green color 1 later (p<0.05). Revascularization of the coronary arteries affects the restoration of the sympathetic phase of the pupil’s response to light and the force of pupil contraction (p<0.05). Key words:: chronic ischemic optic neuropathy, the cardiovascular system, cardiac stenting, optic nerve