title: Microcoaxial torsional cataract surgery 1.8 mm versus 2.2 mm: functional and morphological assessment.
abstract: OBJECTIVE
  To compare functional and morphological outcomes of 1.8-mm versus 2.2-mm microincision coaxial cataract surgery (MCCS).
  
  
  METHODS
  Thirty eyes of 30 patients that underwent MCCS were randomized to two groups: 1.8-mm MCCS (group 1: 15 eyes) and 2.2-mm MCCS (group 2: 15 eyes).
  
  
  RESULTS
  There were no significant between-group differences in uncorrected visual acuity, best-corrected visual acuity, keratometric astigmatism, and endothelial cell count. One day postoperatively, a greater increase of corneal thickness at the incision site was observed in group 1 compared to group 2 using anterior segment optical coherence tomography with no significant differences in tunnel morphometric features and confocal microscopy showed more tunnel edema in group 1 versus group 2 that resolved in both groups.
  
  
  CONCLUSIONS
  Both 1.8- and 2.2-mm torsional MCCS were safe and efficient with easy surgical maneuvers and excellent functional and morphological results; 1.8-mm MCCS induced slightly greater tunnel edema shortly after surgery that resolved in the medium term.
authors.affiliation: Department of Medicine and Science of Ageing Eye Clinic, University of Chieti G d'Annunzio Laboratory of Biostatistics, Chieti, Italy.
authors.forename: Leonardo
authors.initials: L
authors.lastname: Mastropasqua
authors.forename: Lisa
authors.initials: L
authors.lastname: Toto
authors.forename: Luca
authors.initials: L
authors.lastname: Vecchiarino
authors.forename: Marta
authors.initials: M
authors.lastname: Di Nicola
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Mastropasqua
mesh_terms: D000368:Aged; D001251:Astigmatism / Q000209:etiology / Q000473:pathology; D002387:Cataract Extraction / Q000009:adverse effects / Q000379:methods*; D002452:Cell Count; D003315:Cornea / Q000473:pathology; D015715:Corneal Edema / Q000209:etiology / Q000473:pathology; D004728:Endothelium, Corneal / Q000473:pathology; D005139:Eyeglasses; D006801:Humans; D018613:Microscopy, Confocal; D011184:Postoperative Period; D011446:Prospective Studies; D012029:Refraction, Ocular; D041623:Tomography, Optical Coherence; D016896:Treatment Outcome; D014785:Vision, Ocular; D014792:Visual Acuity