[Degenerative myopia: recurrence of subretinal neovessels after laser photocoagulation]

Macular subretinal neovascularization is one of the most important causes of impaired vision in eyes affected by pathologic myopia. Results of studies concerning the natural history of subretinal neovascularization are inconclusive and contradictory. Like in other macular degenerations, laser photocoagulation could be useful in treating neovascular membranes. Available results indicate that laser treatment can reduce the risk of severe visual loss. However recurrent neovascularization may complicate laser treatment with further visual loss. The authors have reviewed the records of 98 eyes affected by pathologic myopia (axial length à 26.5 mm) and macular subretinal neovascularization that underwent laser photocoagulation. 41 eyes (42%) developed one or more recurrences during a 12 months follow-up period. No relationship was found between sex, age, axial length, distance from the center of the foveal avascular zone or size of neovascular membrane, and recurrence rate. Eyes that experienced recurrences had a final visual acuity significantly worse than the others (p = 0.02). 65% of recurrences was observed in the first 3 months after treatment. 67% of such neovascularizations was located at the foveal side of the laser scar. These data underscore the necessity for close, careful follow-up of all patients who have undergone treatment of a subretinal neovascularization.