Fasting: Weak Eyesight and Medical Advice: Must I Fast in Ramadan?

Practical Laws of Islam as per the teachings of Imam Khamenei

Fasting: Weak Eyesight and Medical Advice: Must I Fast in Ramadan?

English:

Question #748:

I wear medical glasses and at the present, my eyes are too weak. The doctors tell me that if I do not strengthen my physique my eyesight will get weaker. If I am unable to perform the Ramadan fasts, what is my duty?

Answer #748:

If fasting is harmful for your eyes, you are not obligated to fast; in fact, it is obligatory that you refrain from fasting. And if your illness continues until the next Ramadan, then your duty is to give one mudd [750 grams] of food to the needy for every day that you did not fast.

-Imam Khamenei, Practical Laws of Islam, Importance and Conditions of Fasting