• The treatment of peripheral retinal tears by laser photocoagulation is an accepted technique. One of its limitations is its difficulty in use near the ora serrata. The inability to treat the anterior border of a retinal tear may allow the tear to progress to clinical retinal detachment despite treatment of the tear's posterior and lateral borders. The use of a scleral indentation funnel at the time of laser photocoagulation permits the sealing of all margins of the break. This technique increases the number of retinal tears that can be treated by the laser, and it may improve the rate of success of photocoagulation of peripheral retinal tears.
Sigelman J, Eisner G. Laser Photocoagulation With Biomicroscopic Scleral Indentation. Arch Ophthalmol. 1980;98(9):1623-1624. doi:10.1001/archopht.1980.01020040475017