Q. Re- regarding the question 3143 above on one undergoing an operation during sefira that will make him miss a day. Should he on the next day count also the day before that he missed?
A. The response depends on the time of the day when he is already able to count. It it is still day, only according to some opinions, he should count without a brocho. Then continue counting with a brocho. The same would apply to Erev Shabbos even after he accepted Shabbos and davened Maariv, if it is still before sunset. (Shaarei Teshuva 483: 4, Igros Moshe 4: 99).
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a