title: Comparison of clear lens extraction and collamer lens implantation in high myopia.
abstract: OBJECTIVE
  To compare the outcomes of clear lens extraction and collamer lens implantation in high myopia.
  
  
  METHODS
  Myopic patients younger than 40 years old with more than 12 diopters of myopia or who were not fit for laser-assisted in situ keratomileusis were included. Group 1 comprised patients undergoing clear lens extraction and Group 2 patients received the Visian implantable collamer lens. Outcome and complications were evaluated.
  
  
  RESULTS
  Postoperative best corrected visual acuity was -0.61 +/- 0.18 in Group 1 and 0.79 +/- 0.16 in Group 2. In Group 1, 71.4% achieved a postoperative uncorrected visual acuity better than the preoperative best corrected visual acuity, while only 51.8% patients achieved this in Group 2. Intraocular pressure decreased by 12.55% in Group 1, and increased by 15.11% in Group 2. Corneal endothelial cell density decreased by 4.47% in Group 1 and decreased by 5.67% in Group 2. Posterior capsule opacification occurred in Group 1. In Group 2, lens opacification occurred in 11.11%, significant pigment dispersion in 3.7%, and pupillary block glaucoma in 3.7%.
  
  
  CONCLUSIONS
  Clear lens extraction presents less of a financial load up front, and less likelihood of the need for a secondary intervention in the future. Clear lens extraction is a more viable solution in developing countries with limited financial resources.
authors.affiliation: Cairo University, Cairo, Egypt.
authors.forename: Ahmed M
authors.initials: AM
authors.lastname: Emarah
authors.forename: Mostafa A
authors.initials: MA
authors.lastname: El-Helw
authors.forename: Hazem M
authors.initials: HM
authors.lastname: Yassin