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Date Published: 02/01/2024
Abstract Views: 128
Views pdf: 83
DOI: https://doi.org/10.51298/vmj.v533i1.7725
Issue
Vol. 533 No. 1 (2023)
Section
Các bài báo
How to Cite
Nguyễn, H. G., Nguyễn, Đức A., & Nguyễn, M. P. (2024). MEASUREMENT OF CONTRAST VISUAL ACUITY AFTER CATARACT SURGERY. Vietnam Medical Journal, 533(1). https://doi.org/10.51298/vmj.v533i1.7725

MEASUREMENT OF CONTRAST VISUAL ACUITY AFTER CATARACT SURGERY

Hạnh Giang Nguyễn1,, Đức Anh Nguyễn1, Minh Phú Nguyễn2
1 HMU
2 Central Eye Hospital

Main Article Content

Abstract

Purpose: Measure contrast visual acuity and affected factors of patients after cataract surgery at Hanoi Eye Hospital 2. Methods: Descriptive cross-sectional study performed on 50 eyes after cataract surgery at Hanoi Eye Hospital 2 from December 2022 to April 2023. Results: The mean age of patients in the study group was 65 ± 9.5 with 24 males and 26 females. The rate of cataract eyes is 54% in the right eye, 46% in the left eye. Cataract grade of the patients are grade 2 (12%), grade 3 (50%), grade 4 (22%), and grade 5 (16%). After surgery, the best corrected visual acuity was in the range of 20/30 to 20/40 (54%), better than 20/30 (18%) and from 20/40 to 20/100. (28%). Contrast visual acuity after surgery significantly improved compared to before surgery and stabilized after 2 months. Most of the eyes had contrast visual acuity within normal limits at low and middle spatial frequencies (1.5 cpg, 3 cpg, 6 cpg) and worse than normal values at high spatial frequencies (12 cpg, 18 cpg). Several factors that affect contrast visual acuity after surgery include age, glare and halos. Conclusion: Cataract is one of the most common eye diseases. Contrast visual acuity measurement takes an important role to improve visual function and enhance quality of life for patients after cataract surgery.

Article Details

Keywords

Cataract, contrast visual acuity, spatial frequency.

References

Ventruba J. [The influrence of visual acuity and contrast sensitivity on subjective evaluation of visual function before and after cataract surgery]. Cesk Slov Oftalmol. 2005;61(4):265-272.
2. Longo A, Uva MG, Reibaldi A, Avitabile T, Reibaldi M. Long-term effect of phacoemulsification on trabeculectomy function. Eye (Lond). 2015; 29(10):1347-1352.
3. Vingopoulos F, Kasetty M, Garg I, et al. Active Learning to Characterize the Full Contrast Sensitivity Function in Cataracts. OPTH. 2022;16:3109-3118.
4. Trần Thị Phương Thu, Phạm Nguyên Huân. Đánh giá kết quả phẫu thuật đục thể thủy tinh đặt kính nội nhãn giả điều tiết Acrysof Restor ở hai mắt tại Bệnh viện Mắt TP. Hồ Chí Minh. Published 2006.
5. Mela EK, Gartaganis SP, Koliopoulos JX. Contrast sensitivity function after cataract extraction and intraocular lens implantation. Doc Ophthalmol. 1996;92(2):79-91.
6. Mohammadi A, Hashemi H, Mirzajani A, Yekta A, Jafarzadehpur E, Khabazkhoob M. Comparison of two methods for measuring contrast sensitivity in anisometropic amblyopia. Journal of Current Ophthalmology. 2018; 30(4):343-347.
7. Derefeldt G, Lennerstrand G, Lundh B. Age Variations in Normal Human Contrast Sensitivity. Acta Ophthalmologica. 1979;57(4):679-690.
8. Rubin GS. Comparison of Acuity, Contrast Sensitivity, and Disability Glare Before and After Cataract Surgery. Arch Ophthalmol. 1993;111(1):56.