12.07.2015 Views

Baixe aqui a versão em PDF da RBO - Sociedade Brasileira de ...

Baixe aqui a versão em PDF da RBO - Sociedade Brasileira de ...

Baixe aqui a versão em PDF da RBO - Sociedade Brasileira de ...

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

104Caballero JCS, Centurion VINTRODUCTIONIndividuals submitted to keratotomy for correction of myopiaand / or astigmatism in the 80’s, an average age of 30, nowreaching 60 years, are looking for cataract surgery or forsurgical correction of other refractive errors such as secon<strong>da</strong>ryprogressive hyperopia.These patients have behavioralcharacteristics that is known as “refractive profile”, that is, theyare individuals who have had correction of refractive errors andnow, at the moment of selecting a new surgery they have anexpectation equal to or higher than in the first experience. Theyare well informed about advances in eye surgery and d<strong>em</strong>and orexpect to have results that meet or exceed their expectations (1) .Another characteristic is related to the cornea that usuallyshows a progressive central flattening, with fluctuation of thevisual acuity.When submitted to lens surgery may have asignificant flattening, though t<strong>em</strong>porary, which may compromisethe final result (2) .Refractive (1) predictability and reproducibility of IOLcalculation may be difficult due to the peculiarities of the corneapreviously submitted to keratotomy.The objective of this study is to analyze the cataract surgerypostoperative refractive results in eyes previously submitted tokeratotomy, using Haigis formula and the <strong>da</strong>ta provi<strong>de</strong>d by IOLMaster ® optical biometer.METHODSThis is a retrospective, non-comparative study of 20 eyeswhich were submitted to keratotomy in the past and have cataractwith an indication for intraocular lens implantation byphaco<strong>em</strong>ulsification.All the eyes un<strong>de</strong>rwent a complete ophthalmologicexamination with <strong>em</strong>phasis on the biomicroscopy of the anteriorsegment, for analysis of radial cuts in the cornea, IOL calculation,analysis of vision potential (PAM) and evaluation of retina.The measur<strong>em</strong>ents for IOL calculation were obtainedfrom the optical biometry based on partial coherenceinterferometry (IOL Master ® , Zeiss, version 5.4, 5.5). Thisequipment provi<strong>de</strong>s:1. Axial length2. Central keratometry of 2.50mm3. White-to-white diameter4. Anatomic <strong>de</strong>pth of the anterior chamber.To obtain more <strong>de</strong>tailed analysis of the corneal surface,theeyes were submitted to corneal topography (Tomey - TMS) andcorneal tomography (Pentacam - Oculus).The keratometry used for the calculation of IOL was theone provi<strong>de</strong>d by IOL Master ® that when compared to Pentacam ® ,module Holla<strong>da</strong>y Report, the 3mm does not present a significantdifference.The biometric formula used was Haigis. The surgicaltechnique was with scleral incision 1.50mm from the limbus, withsclero-corneal tunnel of 2.2mm wi<strong>de</strong>, phaco<strong>em</strong>ulsification usingAlcon INFINITI equipment and implantation of hydrophobicacrylic aspheric intraocular lens - SN60WF - Alcon. All surgerieswere performed by one surgeon (VC). The refraction studiedwas collected between the third and the sixth monthspostoperative. The chosen preoperative target refraction inbiometric calculation was for <strong>em</strong>metropia (plano).All patients signed an inform consent about the procedure.The statistic method used was the T Stu<strong>de</strong>nt.Table1Data of eyes with previous keratotomy submitted to cataract surgeryNº K1K2 Pre Axial L ACD IOL RX Post S.E. UDVA LogMAR CDVA LogMAR Formula1. 33.35 x 83 / 37.63 x 173M = 35.49 27.48 3.50 21.00SN60WF +0.50-2.50 90º -0.75 20/60 0.48 20/20 0.00 Haigis2. 43.44 x 14 / 43.83 x 104M = 43.63 23.97 3.32 18.50SN60WF Plana Plano 20/20 0.00 20/20 0.00 Haigis3. 42.75 x 16 / 43.44 x 106M = 43.10 24.57 3.26 18.00SN60WF Plana Plano 20/30 0.18 20/30 0.18 Haigis4. 35.20 x 180 / 36.20 x 90M = 35.70 25.79 3.20 25.00SN60WF -1.75140º -0.87 20/40 0.30 20/20 0.00 Haigis5. 35.00 x 55 / 34.40 x 145M = 34.70 25.64 3.27 27.00SN60WF -0.50160º -0.25 20/30 0.18 20/20 0.00 Haigis6. 36.25 x 104 / 37.09 x 14M = 36.67 27.03 3.77 20.00SN60WF +0.50 +0.50 20/30 0.18 20/20 0.00 Haigis7. 34.23 x 129 / 44.53 x 39M = 39.38 25.59 3.58 20.00SN60WF -5.00120º -2.50 20/100 0.70 20/30 0.18 Haigis8. 35.83 x 85 / 36.64 x 175M = 36.23 26.04 3.51 23.00SN60WF -1.00115º -0.50 20/40 0.30 20/20 0.00 Haigis9. 31.96 x 119 / 37.84 x 29M = 34.90 26.95 2.87 23.00SN60WF Plana-5.50 105º -2.75 20/200 1.00 20/40 0.30 Haigis10. 30.00 x 94 / 35.00 x 4M = 32.50 28.87 2.86 21.00SN60WF +1.00-4.50 92º -1.25 20/200 1.00 20/40 0.30 Haigis11. 35.53 x 17 / 37.38 x 107M = 36.45 27.43 3.06 20.00SN60WF +0.50-1.50 15º -0.25 20/60 0.48 20/20 0.00 Haigis12. 34.62 x 88 / 36.06 x 178M = 35.34 26.50 3.10 23.00SN60WF +0.50-0.75 105º +0.25 20/40 0.30 20/20 0.00 Haigis13. 35.87x 98 / 36.76 x 8M = 36.31 26.12 3.48 23.00SN60WF Plana Plano 20/30 0.18 20/20 0.00 Haigis14. 36.93 x 146 / 37.46 x 56M = 37.19 25.83 4.96 22.50SN60WF Plana Plano 20/30 0.18 20/20 0.00 Haigis15. 35.38 x 123 / 35.83 x 33M = 35.60 29.38 3.19 16.50SN60WF Plana Plano 20/50 0.40 20/30 0.18 Haigis16. 34.97 x 151 / 35.71 x 61M = 35.34 27.19 3.40 21.00SN60WF -1.00145º -0.50 20/50 0.40 20/30 0.18 Haigis17. 35.94 x 172º / 39.06 x 82ºM = 37.50 26.75 3.67 20.00SN60WF +0.50-0.50 70º +0.25 20/30 0.18 20/30 0.18 Haigis18. 35.60 x 11 / 37.01 x 101ºM = 36.30 26.56 3.76 23.00SN60WF Plana Plano 20/20 0.00 20/20 0.00 Haigis19. 41.11 x 5 / 41.93 x 95ºM = 41.52 23.37 3.09 24.50SN60WF Plana Plano 20/20 0.00 20/20 0.00 Haigis20. 41.82 x 151 / 42.13 x 61ºM = 41.97 23.29 2.97 24.50SN60WF -1.00120º -0.50 20/40 0.30 20/20 0.00 HaigisRev Bras Oftalmol. 2013; 72 (2): 103-7

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!