title: Comparative study of hyperacuity and retinometer tests for the evaluation of vision in patients with advanced cataract.
abstract: OBJECTIVE
  To investigates the clinical application value of hyperacuity test for evaluating vision through dense cataracts.
  
  
  METHODS
  Ten normal subjects (20 years) were tested both with Bailey-Lovie type chart and three points vernier acuity test (one of the hyperacuity test); and retinometer test were performed preoperatively and postoperatively in 30 patients (31 eyes) with senile cataract. These patients' lens opacity was classified with LOCS III system.
  
  
  RESULTS
  The correlation of vernier acuity and visual acuity of normal subjects is significant. The result of difference compression of pre-surgical and post-surgical vernier acuity of 30 cataract patients is not significant. The correlation of retinometer findings with post-surgical visual acuity shows not statistically significant. Our result shows that there is good correlation between vernier acuity and post-surgical visual acuity.
  
  
  CONCLUSIONS
  It appears that hyperacuity is a good test for foveal function behind dense cataract and other ocular opacities.
authors.affiliation: Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou 510060, China.
authors.forename: L
authors.initials: L
authors.lastname: Quan
authors.forename: S
authors.initials: S
authors.lastname: Li
authors.forename: C W
authors.initials: CW
authors.lastname: George
authors.forename: B
authors.initials: B
authors.lastname: Brown
authors.forename: L
authors.initials: L
authors.lastname: Yizhi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D014787:Vision Tests; D014792:Visual Acuity