title: Biometric and intraocular pressure change after cataract surgery.
abstract: OBJECTIVE
  To evaluate changes in ocular biometric parameters with optical biometry and intraocular pressure (IOP) by Goldmann tonometry after uneventful phacoemulsification in normotensive eyes.
  
  
  METHODS
  This prospective study was composed of 117 eyes of 117 patients who had undergone uncomplicated phacoemulsification and foldable intraocular lens implantation. The measurements were obtained preoperatively and 1 month postoperatively. Axial length (AL), central corneal thickness (CCT), anterior chamber depth (ACD), pupil diameter (PD), and lens thickness were measured by the LenStar optical biometer, and IOP was measured by Goldmann applanation tonometry. The relationships between IOP change and ocular biometric parameters were evaluated.
  
  
  RESULTS
  Mean age was 64.73 ± 10.83 years; 45 patients were women (38.46%) and 72 patients were men (61.54%). Comparing preoperative and postoperative 1-month measurements, the mean AL, PD, and IOP decreased (p < 0.01), whereas ACD (p < 0.01) and CCT (p > 0.05) increased. Intraocular pressure change correlated positively with AL change (p < 0.05) and PD change (p < 0.05) and preoperative IOP (p < 0.01) and preoperative CCT (p < 0.05). Anterior chamber depth change correlated positively with preoperative ACD (p < 0.01) and negatively with preoperative PD (p < 0.05). Pupil diameter change positively correlated with preoperative PD (p < 0.01). Regression analyses showed that preoperative IOP significantly associated with postoperative IOP reduction according to the standardized coefficient beta (-0.649).
  
  
  CONCLUSIONS
  Anterior segment morphometry changed and IOP decreased after phacoemulsification. The preoperative IOP may be the best parameter for estimating postoperative IOP reduction.
authors.affiliation: *MD Department of Ophthalmology, Adiyaman University, School of Medicine (SB, AS, MC, MG); and Department of Ophthalmology, Adiyaman University, Education and Research Hospital (BB), Adiyaman, Turkey.
authors.forename: Semsettin
authors.initials: S
authors.lastname: Bilak
authors.forename: Ali
authors.initials: A
authors.lastname: Simsek
authors.forename: Musa
authors.initials: M
authors.lastname: Capkin
authors.forename: Mete
authors.initials: M
authors.lastname: Guler
authors.forename: Burak
authors.initials: B
authors.lastname: Bilgin
mesh_terms: D000368:Aged; D000867:Anterior Chamber / Q000473:pathology; D000869:Anterior Eye Segment / Q000473:pathology*; D058452:Axial Length, Eye / Q000473:pathology; D001699:Biometry / Q000295:instrumentation*; D003315:Cornea / Q000473:pathology; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011446:Prospective Studies; D014065:Tonometry, Ocular