VISUAL ACUITY AND CONTRAST SENSITIVITY IN PSEUDOPHAKIC PATIENTS AFTER CATARACT SURGERY

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HERAVIAN SHANDIZ J.; DERAKHSHAN A.; YEKTA A.A.; OSTADI MOGHADAM H.; MAHJOUB M.

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Journal: Medical Journal of Mashhad University of Medical Sciences Year:2007 | Volume:50 | Issue:96 Page(s): 187-192

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Title

VISUAL ACUITY AND CONTRAST SENSITIVITY IN PSEUDOPHAKIC PATIENTS AFTER CATARACT SURGERY

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Keywords

CATARACTQ3

PSEUDOPHAKICQ3

PHAKICQ3

INTRA OCULAR LENSEQ3

VISUAL ACUITYQ3

CONTRAST SENSITIVITYQ4

Abstract

Introduction: This study was designed to determine the role of intraocular lens implantation in VISUAL ACUITY and CONTRAST SENSITIVITY in PSEUDOPHAKIC patients. Material and Methods: This case control study was done in the year 2004 in Mashhad Ophthalmology Center of Khatam- al- Anbia. with convenience sampling method based on object VISUAL ACUITY and CONTRAST SENSITIVITY in 85 PSEUDOPHAKIC patients (110 eyes) with a mean age of 63.83, and 20 age - matched PHAKIC subjects (40 eyes) were compared. The VISUAL ACUITY and CONTRAST SENSITIVITY at distance after correction of refractive disorders were 'measured by Snellen chart and Cambridge Low Contrast grating chart at 6 meter. Individual data, surgery date, VISUAL ACUITY, and CONTRAST SENSITIVITY were gathered in a questionnaire and analyzed by descriptive statistics and frequency distribution tables. Results: Statistical test showed that the best corrected VISUAL ACUITY in IOL group had no significant difference from that in the PHAKIC group (p=0.36). But the CONTRAST SENSITIVITY reduces in the PSEUDOPHAKIC group comparing with the PHAKIC group (p=0.004).These patients often complain of blur vision, despite of good VISUAL ACUITY. CONTRAST SENSITIVITY reduced significantly with increase of age in both groups of normal and PSEUDOPHAKIC patients. No improvement in CONTRAST SENSITIVITY and VISUAL ACUITY was found over the time (Pva=0.174, Pcs=0.257).Conclusion: This study showed that intraocular lenses could provide good VISUAL ACUITY for distance but there was slight reduction in CONTRAST SENSITIVITY. CONTRAST SENSITIVITY test is an important tool for evaluation of visual function; especially age related changes or intraocular differences, which may not have been detected by VISUAL ACUITY tests.

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APA: Copy

HERAVIAN SHANDIZ, J., DERAKHSHAN, A., YEKTA, A.A., OSTADI MOGHADAM, H., & MAHJOUB, M.. (2007). VISUAL ACUITY AND CONTRAST SENSITIVITY IN PSEUDOPHAKIC PATIENTS AFTER CATARACT SURGERY. MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, 50(96), 187-192. SID. https://sid.ir/paper/51934/en

Vancouver: Copy

HERAVIAN SHANDIZ J., DERAKHSHAN A., YEKTA A.A., OSTADI MOGHADAM H., MAHJOUB M.. VISUAL ACUITY AND CONTRAST SENSITIVITY IN PSEUDOPHAKIC PATIENTS AFTER CATARACT SURGERY. MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2007;50(96):187-192. Available from: https://sid.ir/paper/51934/en

IEEE: Copy

J. HERAVIAN SHANDIZ, A. DERAKHSHAN, A.A. YEKTA, H. OSTADI MOGHADAM, and M. MAHJOUB, “VISUAL ACUITY AND CONTRAST SENSITIVITY IN PSEUDOPHAKIC PATIENTS AFTER CATARACT SURGERY,” MEDICAL JOURNAL OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, vol. 50, no. 96, pp. 187–192, 2007, [Online]. Available: https://sid.ir/paper/51934/en

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