In cases of glaucoma not controlled by medical therapy and with small residual fields, there are three choices of treatment:
1. A filtering operation: A filtering operation may be successful, but most reports1-3 have indicated poor results. Relatively minor complications may be disastrous, and even after an uncomplicated procedure there may be a sudden loss of the remaining field or an increase in the rate of progress of lens opacities. Realization of this is conducive to procrastination.
2. A purposeful continuation of medical treatment in spite of uncontrolled ocular tension: Many writers4,5 consider this the only permissible treatment for one-eyed patients. In cases where this situation prevails in both eyes, they consider surgery on one eye permissible.
3. Finally, treatment may be by means of cyclodiathermy, either alone or, as will be advocated here, supplemented by continued medical therapy.
There is now a voluminous literature about cyclodiathermy. Many
LOCKE JC. Cyclodiathermy Combined with Medical Treatment in Glaucoma with Severe Visual Field Loss. AMA Arch Ophthalmol. 1959;62(4):626–640. doi:10.1001/archopht.1959.04220040088013
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