TY - JOUR
T1 - Mid‐Infrared laser ablation of the cornea
T2 - A comparative study
AU - Ren, Qiushi
AU - Venugopalan, Vasan
AU - Schomacker, Kevin
AU - Deutsch, Thomas F.
AU - Flotte, Thomas J.
AU - Puliafito, Carmen A.
AU - Birngruber, Reginald
PY - 1992
Y1 - 1992
N2 - The ablation thresholds and patterns of collateral damage in cornea produced by Er:YAG (2.94 μm) and Er:YSGG (2.79 μm) lasers were measured. Two different pulse durations, 200 μs (normal spiking mode) and 100 ns (Q–switched mode), were used at both wavelengths. In the normal spiking mode, damage zones of 16 ± 2 μm and 39 ± 7 μm and ablation thresholds of 250 ± 20 mJ/cm2 and 420 ± 35 mJ/cm2 were measured at 2.94 μm and 2.79 μm, respectively. In the Q–switched mode, damage zones of 4 ± 2 μm and ablation thresholds of 150 ± 10 mJ/cm2 were found irrespective of the laser used. The similarity between the results using the Er:YAG and Er:YSGG lasers in the Q–switched mode suggest that either laser can be used with equal effectiveness for corneal trephination. © 1992 Wiley‐Liss, Inc.
AB - The ablation thresholds and patterns of collateral damage in cornea produced by Er:YAG (2.94 μm) and Er:YSGG (2.79 μm) lasers were measured. Two different pulse durations, 200 μs (normal spiking mode) and 100 ns (Q–switched mode), were used at both wavelengths. In the normal spiking mode, damage zones of 16 ± 2 μm and 39 ± 7 μm and ablation thresholds of 250 ± 20 mJ/cm2 and 420 ± 35 mJ/cm2 were measured at 2.94 μm and 2.79 μm, respectively. In the Q–switched mode, damage zones of 4 ± 2 μm and ablation thresholds of 150 ± 10 mJ/cm2 were found irrespective of the laser used. The similarity between the results using the Er:YAG and Er:YSGG lasers in the Q–switched mode suggest that either laser can be used with equal effectiveness for corneal trephination. © 1992 Wiley‐Liss, Inc.
KW - ablation thresholds
KW - corneal trephination
KW - pulse durations
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U2 - 10.1002/lsm.1900120306
DO - 10.1002/lsm.1900120306
M3 - Article
C2 - 1508021
AN - SCOPUS:0026704268
SN - 0196-8092
VL - 12
SP - 274
EP - 281
JO - Lasers in Surgery and Medicine
JF - Lasers in Surgery and Medicine
IS - 3
ER -