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Objective: There are significantly few studies which have introduced the comparison intra ocular lens (IOL) outcome with conventional phacoemulsification surgery. Thus, in the present study, we aimed to compare anterior chamber intra ocular lens (AC IOL) and LASIK surgery in Mongolian patients. Methods: This study was conducted on 67 participants. Females comprised 58.8 % in the IOL patients and 72.0 % in the LASIK groups. The mean age of the participants was 32.06 ± 9.29 in IOL and 29.4 ± 6.59 in the LASIK group. Results: Pre operative uncorrected visual activity (UCVA) was 7.94 ± 6.56 in IOL patients, and 2 weeks after surgery, UCVA had increased to 61.18 ± 21.18. In the case of LASIK, pre-operative UCVA was 20.56 ± 17.20, and the value was 86.8 ± 18.23 after surgery. Pre-operative best-corrected visual acuity (BCVA) IOL and LASIK group were 37.65 ± 18.38 and 97.6 ± 4.31, respectively. However, only IOL patients had significantly improved BCVA after surgery (71.76 ± 22.97 at post-operative 2nd week). Conclusions: The best-corrected visual acuity and was better for AC IOL than LASIK surgery.

Objective: Intraocular lens (IOL) implants are artificial lenses which helps to clear up the vision after cataract surgery. In this work, we aimed to compare the monofocal and trifocal IOL implantation during phacoemulsification. Methods: 60 eyes of 60 patients were divided into 2 equal groups. Postoperative astigmatism and UCVA were measured and compared during week 1, week 2 and month. Results: The mean preoperative UCVA was 6.83 ± 4.61 in the monofocal IOL group, and 17.5 ± 17.55 in the trifocal IOL group. At the first week: The mean postoperative UCVA at one week was 35.46 ± 19.45 and 58.64 ± 20.77, in each group respectively. The mean postoperative BCVA in the first week was 42.71 ± 20.63 and 65.91 ± 20.85, in each group respectively. The mean postoperative UCVA at 1 month was 46.57 ± 24.37 and 76.36 ± 23.61, in each group, while BCVA was 63.14 ± 24.94 and 89.54 ± 14.63. There was a highly significant statistical difference between the result of UCVA preoperative and the results of UCVA at the early and last postoperative follow up. Conclusion: From our results, it is evident that post-operative near UCVA and BCVA was statistically significant at monofocal and trifocal groups.