Most surgical procedures for the treatment of retinal detachment employ the use of high-frequency currents, conveyed to the site by a needle electrode. The local heating produced by the passage of these currents stimulates an adhesive choroiditis.1 The surgeon has little idea of the amount of current generated by his machine, nor does he measure the current that passes into the tissue. Needles of different diameter, different length, and different active surface are used. It is not surprising that the results of treatment are variable and that sometimes side-effects follow electrosurgical treatment.2 It is imperative to determine and to quantify the current characteristics which will produce the desired therapeutic effect without causing unnecessary injury to the tissue.
This study was undertaken to determine the extent to which these requirements can be met, with use of equipment commonly employed in this type of surgery. The current most frequently used
GUNTER R, DEWIG E, MILLS KS. Some Effects of Diathermy Currents on Eye Tissue. AMA Arch Ophthalmol. 1958;60(3):437-442. doi:10.1001/archopht.1958.00940080455013