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Sequential and combined PK, cataract surgery show similar refractive variability
Optom Vis Sci. 2010;87(7):482-486.
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Performing penetrating keratoplasty followed by secondary cataract extraction and posterior chamber IOL implantation resulted in slightly better best corrected visual acuity than combined PK and cataract surgery, but conferred no significant advantages, a study of the procedures found.
"Sequential surgery appears to offer no significant advantages over the triple procedure in terms of refractive predictability or variability. There was a slight trend toward more patients achieving 6/12 or better vision in the sequential group," study authors said.
The study looked at 46 consecutive patients who underwent either combined PK and cataract surgery (n = 23), known as triple procedure, or penetrating keratoplasty, secondary cataract extraction and posterior chamber IOL implantation (n = 23), known as sequential surgery.
Follow-up was at least 1 year.
The study found that BCVA of 6/12 or better was achieved in 16 eyes (69.8%) in the triple procedure group and in 19 eyes (82.6%) in the sequential surgery group.
No difference in mean postoperative refractive outcome was found in the groups compared to mean target refraction.
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