While I understand your concern regarding the need for cataract surgery, I want to emphasize the importance of having a stable Blood Pressure and Blood
Sugar levels. A very high BP such as the one that you noted can lead to serious vision threatening complications in case a cataract surgery is done. Nonetheless, a BP of 180 or above (which I presume is her Systolic pressure) is called Hypertensive Urgency and needs immediate treatment
Next Steps
Kindly consult a General Physician, stabilize her blood pressure.
Health Tips
Cataract surgery shouldn't be your priority right now.