title: [Intraocular phakic lens ZSAL-4 for high myopia correction].
abstract: OBJECTIVE
  To evaluate the effectiveness, safety and predictability of the phakic intraocular lens (IOL) ZSAL-4 for correction of high myopia.
  
  
  METHODS
  In this retrospective study 28 IOL in 19 patientes were implanted. The following data were recorded, preoperatively, one week, one month, 3, 6 and 12 months postoperatively: spherical equivalent (SE), astigmatism, uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), endothelial cell density (CD), coefficient of variation (CV) and intraocular pressure (IOP). We performed LASIK in 3 eyes to correct a residual refractive defect.
  
  
  RESULTS
  The mean age was 29.7 S.D. 5.77 years and the mean following 7.62 S.D. 7.29 months. Six months postoperatively, the preoperative SE of -14.91 S.D. 2.88 was reduced to -1.29 S.D. 0.53; the BCVA varied from 0.56 S.D. 0.16 to 0.58 S.D. 0.12; the CD changed from 2670 S.D. 252 cells/mm2 to 2344 S.D. 262. The CV showed stability. The UCVA six months postoperatively was 0.39 S.D. 0.15. No eyes lost any line of BCVA; during the first month 63% of the eyes won 2 or more lines. The efficacy index was 0.83 S.D. 0.24 one month postoperatively and 0.63 S.D. 0.32 one year postoperatively; the safety index was 1.44 D.S. 0.34 and 1.30 S.D. 0.35 respectively. One IOL was explanted the second day due to pupilary blockage; 7 eyes had transient high IOP; 2 eyes developed pupilary ovalization and in 4 cases the IOL suffered some degree of rotation. One eye presented a flat retinal detachment one year postoperatively but with no other complications. The 3 eyes submitted to LASIK presented 0.8 of BCVA the third month after LASIK.
  
  
  CONCLUSIONS
  ZSAL-4 IOL implantation is an effective and safe procedure with an acceptable predictability which, in some cases, could be improved with LASIK.
authors.affiliation: Clínica de Oftalmología de Córdoba. Córdoba. España. alvillarrubia@yahoo.com
authors.forename: A
authors.initials: A
authors.lastname: Villarrubia Cuadrado
authors.forename: J M
authors.initials: JM
authors.lastname: Gallardo Galera
authors.forename: M
authors.initials: M
authors.lastname: Bergillos Arillo
authors.forename: L
authors.initials: L
authors.lastname: Pérula de Torres
authors.forename: F
authors.initials: F
authors.lastname: Labella Quesada
authors.forename: E
authors.initials: E
authors.lastname: Palacín Miranda
mesh_terms: D000328:Adult; D000867:Anterior Chamber / Q000601:surgery*; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007908:Lens, Crystalline / Q000502:physiology*; D007910:Lenses, Intraocular; D008297:Male; D009216:Myopia / Q000601:surgery*; D011183:Postoperative Complications / Q000601:surgery; D012189:Retrospective Studies; D012449:Safety; D016896:Treatment Outcome; D014792:Visual Acuity