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Daniel Badoza

Publications and source records attributed to Daniel Badoza.

3 recordsLinked to original sources
PubMed2003

Phacoemulsification using the burst mode.

PURPOSE: To compare the amount of ultrasound (US) energy required for burst mode and pulse mode during nuclear fragment emulsification. SETTING: Instituto de la Visión, University of Buenos Aires, Buenos Aires, Argentina. METHODS: The ultrasound time (UST) and effective US power (USP) used by 2 surgeons were retrospectively compared. Nuclear fragments were emulsified using the pulse mode in 82 cases (Group 1) and the burst mode in 118 cases (Group 2). The 2 groups were divided according to nuclear hardness: 0 to 2+ (subgroups 1a and 2a) or 3+ to 4+ (subgroups 1b and 2b). The difference in nuclear hardness between Groups 1 and 2 was not statistically significant. RESULTS: The mean UST and USP were, respectively, 1.64 minutes +/- 0.98 (SD) at 10.53% +/- 4.46% in subgroup 1a and 0.56 +/- 0.46 minutes at 10.51% +/- 5.80% in subgroup 1b. The respective means were 2.94 +/- 1.36 minutes at 15.14% +/- 4.49% in subgroup 2a and 0.75 +/- 0.52 minutes at 10.04% +/- 3.12% in subgroup 2b. The differences between subgroups were statistically significant except between subgroups 2a and 2b. CONCLUSION: The burst mode increased US efficiency, especially when used for hard cataracts.

Aged↗
PubMed2003

Intraocular lens power calculation after refractive surgery.

PURPOSE: To analyze the results of phacoemulsification cataract surgery in eyes that had had refractive surgery and to compare the predictability of various methods of intraocular lens (IOL) power calculation. SETTING: Instituto de la Visión, Buenos Aires, Argentina. METHODS: The study involved 7 cases that had phacoemulsification after radial keratotomy or laser in situ keratomileusis. The spherical equivalent (SE) and visual acuity were evaluated preoperatively and postoperatively to assess the changes before cataract development. The IOL power calculated with conventional keratometry (CK), adjusted keratometry, the clinical history method (CHM), corneal topography (CT), and the contact lens method (CLM) was compared with the final refractive and keratometric results measured with the BackCalcs (Holladay(R) IOL Consultant Program, Holladay Consulting, Inc.) to assess the accuracy and predictability of each method. RESULTS: The mean SE was -4.82 diopters (D) +/- 5.13 (SD) before phacoemulsification and +0.19 +/- 1.01 D after phacoemulsification, and the mean best corrected visual acuity was 0.39 +/- 0.07 (20/50) and 0.80 +/- 0.06 (20/25), respectively. CONCLUSIONS: Post-phacoemulsification refraction in cases with previous refractive surgery appeared to be predictable when the appropriate calculation method was applied. When all the data were available, the CHM provided the best results. Adjusted keratometry and CT seemed to be more accurate than CK and the CLM.

Cataract Extraction↗