In vitro destruction of anterior human lens capsule by submicrosecond pulses of Yb,Er:Glass laser

In vitro spectroscopic investigation of human cataract lens capsule hydropermeability

“…Such laser systems provide a cut of the capsule with the shape of an ideal circle with a given diameter, the edge of the capsule is characterized by greater strength than in the case of manual capsulorhexis [18]. In recent times, the use of a microsecond Yb,Er:Glass laser radiation with a wavelength of 1.54 µm has been discussed [19] for efficient fragmentation of the cataract lens and for performing anterior capsulorhexis [20]. On the other hand, for performing a capsulorhexis it is also possible to use the radiation of lasers on crystalline media activated by erbium ions; the use of Er:YAG laser radiation for lens fragmentation was investigated in [21][22][23].The radiation of Er:YAG laser with a wavelength of 2.94 µm is very effectively absorbed by water [24,25]; as a result, the penetration depth of this radiation into water-saturated tissues, to which the lens capsule can be attributed, is close to 1 µm.…”