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- 저자 : Sanghyu Nam(Sanghyu Nam) (검색결과 2 건)
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Scleral Lens Applications Focused on Korean Patients with Various Corneal Disorders
Ko Eun Lee(Ko Eun Lee),Su Young Moon(Su Young Moon),Sanghyu Nam(Sanghyu Nam),Joon Hyuck Jang(Joon Hyuck Jang),Jae Yong Kim(Jae Yong Kim),Hungwon Tchah(Hungwon Tchah),Hun Lee(Hun Lee) 대한안과학회 2023 Korean Journal of Ophthalmology Vol.37 No.2
Purpose: We aimed to report on the clinical outcomes of scleral lens applications in Korean patients with various corneal disorders. Methods: This retrospective review was conducted for 62 eyes of 47 patients who had been fitted with scleral lenses for variouscorneal disorders. The patients were referred for inadequate spectacle-corrected visual acuity and rigid gas permeable(RGP) or soft contact lens intolerance. Uncorrected visual acuity, habitually corrected visual acuity, best lens-corrected visualacuity, topographic indices, keratometry indices, and lens parameters were evaluated. Results: Twenty-six eyes of 19 patients with keratoconus were enrolled. Other conditions included corneal scar (13 eyes of12 patients), phlyctenules (three eyes), laceration (four eyes), chemical burn (one eye), keratitis (one eye), Peters’ anomaly (oneeye), fibrous dysplasia (one eye), ocular graft-versus-host disease (two eyes of one patient), irregular astigmatism (18 eyes of12 patients), and corneal transplant status (five eyes of four patients). The mean topographic values of the eyes include flatkeratometric value (43.0 ± 6.1 diopters [D]), steep keratometric value (48.0 ± 7.4 D), and astigmatism (4.9 ± 3.6 D). Of the eyesfitted with scleral lenses, best lens-corrected visual acuity (0.10 ± 0.22 logarithm of the minimum angle of resolution [logMAR])was significantly better than the habitually corrected visual acuity (0.59 ± 0.62 logMAR, p < 0.001). Conclusions: Scleral contact lenses are a good alternative for patients with corneal abnormalities and those who are intolerableto RGP contact lenses, resulting in both successful visual outcomes and patient satisfaction, especially concerning keratoconus,corneal scar, and corneal transplant status.
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Hyunah Lim,Joon Hyuck Jang,Sanghyu Nam,Koeun Lee,Jae Yong Kim,Hungwon Tchah,Hun Lee 대한안과학회 2024 Korean Journal of Ophthalmology Vol.38 No.1
Purpose: We aimed to compare the accuracy of the intraocular lens (IOL) calculation formula using the standard keratometry (K) and total K (TK) during the femtosecond laser-assisted cataract surgery (FLACS) with a monofocal IOL with enhanced intermediate function using currently used formulas. Methods: A retrospective review of 125 eyes from 125 patients who had undergone FLACS with implantation of monofocal IOL with enhanced intermediate function was conducted. The predicted refractive power was calculated using an optical biometer (IOLmaster 700) according to the K and TK in the Barrett Universal II, SRK/T, Haigis, and Holladay 2 formulas. Absolute prediction error (APE) obtained from the actual postoperative refractive outcomes and the refractive error predicted in each formula was compared one month after surgery. Results: Mean APE ranged between 0.29 and 0.39 diopters (D) regardless of the calculation formula and the method of measuring corneal curvature. Significant differences were observed in the APE from the four formulas and the two keratometric measurements (p = 0.014). In a total of 125 eyes from 125 patients, the mean APE was lowest with the Barrett Universal II formula. Across all formulas, both the mean APE and the median APE tended to be lower for K than for TK, although there was no significant difference. Approximately 70% to 80% of the patients were included within 0.5 D of the refractive error across all formulas. The percentage of eyes within 0.5 D of APE outcomes was not statistically different between the K and TK data when using each formula. Conclusions: Keratometric measurements considering the poster corneal curvature did not show any additional advantages when implanting the monofocal IOL with enhanced intermediate function during the FLACS.
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