The Rebbe responds to a request for a blessing regarding eye issues and says he will mention them at the Ohel. He encourages creating vessels for blessings through daily Tehillim, Chumash study, joining communal Torah classes, and the wife giving tzedakah before Shabbat and Yom Tov. A recent Lag BaOmer talk is enclosed.
https://www.torahrecordings.com/rebbe/004_igros_kodesh/iyar/1012