Biomedical subjects

H J Nah

Publications and source records attributed to H J Nah.

3 recordsLinked to original sources

PubMed2001

Triangular transchamber suture.

A 64-year-old woman with a fibrous membrane at the lens plane after traumatic loss of all the iris and massive intraocular hemorrhage had posterior chamber intraocular lens (PCIOL) implantation anterior to the fibrous membrane with a triangular transchamber suture to prevent possible PCIOL-corneal touch and enhance the stability of the PCIOL. After 3 years, the PCIOL remained in a good position and visual rehabilitation was satisfactory and without complications.

Eye Injuries↗

PubMed2000

Axial length in branch retinal vein occlusion.

To determine the effects of axial length on the development of branch retinal vein occlusion (BRVO), determination of the affected eye, development of surgical complications, and visual prognosis, axial length was measured in 27 eyes each in surgical, non-surgical and control group and in 54 eyes each in occlusion (surgical + non-surgical group), non-affected eye (non-affected eyes of occlusion group), and non-occlusion group (both eyes of the control group). The average axial length was 22.61 mm in surgical, 22.48 mm in non-surgical, 23.09 mm in control, 22.55 mm in occlusion, 22.56 mm in non-affected eye, and 23.11 mm in non-occlusion group. The axial length showed a statistically significant difference between surgical and control group (p = 0.018), between non-surgical and control group (p = 0.002), and between occlusion and non-occlusion group (p < 0.001); however, no statistically significant difference was seen between surgical and non-surgical group, between non-affected eyes of surgical and non-surgical group, and between occlusion and non-affected eye group. Also, in such as BRVO groups as surgical, non-surgical, and occlusion groups, no correlation was present between axial length and degree of visual acuity recovery and final visual acuity. Although the possibility of developing BRVO is higher in those with short axial length, the axial length may have no relationship with the determination of the affected eye, visual prognosis and development of surgical complications.

Adult↗

PubMed2000

Management of posteriorly dislocated intraocular lens using pars plana vitrectomy.

In order to evaluate the results of pars plana vitrectomy (PPV) for the treatment of posteriorly dislocated intraocular lens (PC-IOL), we retrospectively examined and analyzed the hospital records of patients who had undergone PPV to exchange or reposition a PC-IOL dislocated into the vitreous cavity. Of 20 eyes in 20 patients, IOL exchange was performed in 6 eyes, and IOL repositioning in 14 eyes. Posteriorly dislocated IOL occurred in 14 eyes during or within 2 days, and in 6 eyes 6 months after the IOL implantation. Thirteen eyes were surgically treated early after the occurrence, within 3 days, while 7 eyes were treated later, between 5 to 7 days. Compared with preoperative best-corrected visual acuity, the final visual acuity improved more than 2 lines in 12 eyes. With no significant difference on the statistics, earlier visual rehabilitation seemed to be shown in late-treated patients than in early-treated. Accordingly, a posterior dislocation of IOL can be successfully treated with PPV, and barring any serious complications such as retinal detachment, there is no need for surgery immediately following the occurrence.

Adolescent↗