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. CONCLUSION: It appears that hyperacuity is a good test for foveal function behind dense cataract and other ocular opacities.
Subject(s)
Cataract/physiopathology , Visual Acuity , Adult , Aged , Aged, 80 and over , Humans , Middle Aged , Vision TestsABSTRACT
Modified scleral pocket incision was used on 37 cases (37 eyes) with senile cataract when extracapsular cataract extraction with posterior chamber intraocular lens implantation was performed. The peak value of postoperative corneal astigmatism was 3.60 dioptor (D), corneal astigmatism regression was 2.11 D. Modified scleral pocket incision could reduce significantly postoperative corneal astigmatism and promote to recover of visual acuity. The mechanism of modified scleral pocket to reduce postoperative corneal astigmatism is discussed.
