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Chidambara T. Pillai, Harminder S. Dua, Parwez Hossain; Fine Needle Diathermy Occlusion of Corneal Vessels. Invest. Ophthalmol. Vis. Sci. 2000;41(8):2148-2153.
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purpose. To develop a novel technique, fine needle diathermy (FND), for the
occlusion of corneal vessels and to evaluate its safety and efficacy in
a series of patients.
methods. Fourteen patients were treated with FND to occlude corneal vessels.
Patients were categorized into four groups: group 1
(n = 4), high risk patients with stromal
vascularization before keratoplasty; group 2 (n =
2), patients with progressive lipid keratopathy; group 3
(n = 4), post keratoplasty patients with active
rejection episodes associated with vessels; and group 4
(n = 4), patients with disciform vascularized scars
with recurrent inflammation. The success of the treatment in terms of
vessel occlusion and the clinical outcome were monitored.
results. All patients in group 1 had successful corneal transplantation, and the
grafts remained clear without graft rejection. Patients in group 2 with
lipid keratopathy had 100% obliteration of vessels with stabilization
of corneal scar. All four patients in group 3 had complete regression
of vessels with reversal of graft rejection. Patients with vascularized
disciform scar had resolution of the inflammation without recurrence.
Average follow-up was 10.3 months (minimum, 6 months; maximum, 24
months). No serious complications were observed with FND.
conclusions. FND is a useful and inexpensive technique that can serve as an adjunct
or alternative to laser occlusion for the treatment of established
corneal vessels. It is fairly safe and effective, although
complications such as intrastromal bleeding and crystalline deposits
can occur and at times it may have to be repeated once or twice to
achieve the desired result.
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