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October 1997

Laser Therapy for Retinopathy of Prematurity

Author Affiliations

Bern, Switzerland

Arch Ophthalmol. 1997;115(10):1344. doi:10.1001/archopht.1997.01100160514032

Christiansen and Bradford1 have reported on the formation of bilateral cataracts following diode laser treatment in an 11-week-old white female infant (born after a gestational period of 24 weeks) for retinopathy of prematurity; several hundred 300-mW pulses, each 0.2 seconds in duration, were delivered via a 28-diopter ophthalmoscopic lens. The same authors have similarly observed the development of cataracts after argon laser treatment for the same condition, also in conjunction with an indirect ophthalmoscopic system. Several other investigators have likewise documented the damaging effects of both sources of irradiation on the anterior segment.2,3

The authors were well aware that the argon laser-induced cataracts could be attributed to a high absorption of energy within the persisting tunica vasculosa lentis, but they were unable to account for a similar effect being elicited by diode laser light (810 nm), which, unlike that emitted by the argon laser (488 and 514 nm),

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