On the evening before he was to argue a case before the Supreme Court years ago, Jeffrey Fisher broke his glasses. That left the very nearsighted lawyer with an unappealing choice. He could wear contacts and clearly see the justices but not his notes, or skip the contacts and see only his notes.

It wasn’t hard to decide. “I couldn’t imagine doing argument without seeing their faces,” Fisher said.

He won’t have a choice next month. Because of the coronavirus pandemic the high court is, for the first time in its 230-year history, holding arguments by telephone. Beyond not being able to see the justices' nods, frowns and hand gestures, the teleconference arguments in 10 cases over six days present a range of challenges, attorneys said, but also opportunities.

Roman Martinez, who will argue in a free speech case, said the lack of visual cues may change what sense is most important. “Maybe it will concentrate the mind on listening,” he said.

The unprecedented decision to hold arguments by phone was an effort to help slow the spread of the virus. Most of the justices are at risk because of their age; six are over 65. And hearing arguments by phone allows them to decide significant cases by the court’s traditional summer break.