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  • Title: Contrast sensitivity assessment in pediatric cataract surgery: comparison of preoperative and early postoperative outcomes.
    Author: Vasavada VA, Praveen MR, Vasavada AR, Shah SK, Trivedi RH.
    Journal: J Cataract Refract Surg; 2014 Nov; 40(11):1862-7. PubMed ID: 25217071.
    Abstract:
    PURPOSE: To evaluate the preoperative and early postoperative differences in contrast sensitivity at high and low spatial frequencies after cataract extraction with in-the-bag intraocular lens (IOL) implantation in children presenting with lamellar and posterior subcapsular cataract. SETTING: Iladevi Cataract & IOL Research Centre, Ahmedabad, India. DESIGN: Prospective clinical trial. METHODS: In eyes with lamellar or posterior subcapsular cataract having cataract surgery with Acrysof SN60WF IOL implantation, contrast sensitivity testing was performed using the CSV-1000E sine wave grating test face at 3, 6, 12, and 18 cycles per degree under photopic (85.0 candelas [cd]/m(2)) and mesopic (2.7 cd/m(2)) conditions. The main outcome measures were contrast sensitivity under photopic and mesopic conditions preoperatively and 1 and 3 months postoperatively. The corrected distance visual acuity (CDVA) was recorded in logMAR units. The effect of the type of cataract and of age at surgery on contrast sensitivity preoperatively and 1 and 3 months postoperatively was also evaluated. RESULTS: The mean age of 13 patients (22 eyes) was 7.85 years ± 2.6 (SD). There was a statistically significant difference in contrast sensitivity at every timepoint at every spatial frequency under mesopic and photopic conditions. There was also a statistically significant improvement in CDVA from preoperatively to 1 month postoperatively and from 1 month to 3 months postoperatively (both P<.001). CONCLUSION: There was a significant improvement in contrast sensitivity at high and low spatial frequencies, even in children older than 4 years, after cataract surgery for lamellar or posterior subcapsular cataract. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
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