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Biomedical subjects

U Kraffel

Publications and source records attributed to U Kraffel.

2 recordsLinked to original sources

[Intraoperative complications in cataract surgery. A prospective study].

In a prospective study the important intraoperative complications encountered by two experienced and eight less experienced surgeons after 1708 cataract operations were analyzed. In 2.3% a lesion of the iris or iris sphincter occurred. The overall incidence of capsular ruptures was 0.94%. Zonular dialysis was found in 0.67%. If a severe intraoperative complication with a large capsular or zonular rupture is defined by the necessity for an anterior vitrectomy or the impossibility of implanting a standard posterior chamber lens, the rate of complications was about 0.4%. For the two experienced surgeons, only two anterior chamber lenses as stand-by lens were implanted out of 1500 operations.

Cataract Extraction

[Emmetropization. A statistical study].

The relations between bulb length and the refractive power of the cornea were investigated in 3358 eyes of nonselected patients. There was a negative correlation between corneal refraction and bulb length in the range 19 to 29 mm. However, the data do not support the recently advanced hypothesis that corneal curvature and bulb length are regulated by means of optimal retinal contrast. The mean bulb length in males was 23.83 mm, in females 23.25 mm.

Cataract Extraction