Changes in the state of water in senile cataractous lenses at the different stages of the maturation of cataract were investigated. Senile cataracts of 34 eyes were divided into 4 groups according to degree of lens opacity. Intracapsular cataract extraction was performed and wet weight, dry weight and water content of the cataractous lenses were measured. In incipient and immature cataract, wet weight was 197.4 +/- 20.6mg, dry weight 66.2 +/- 8.2mg and water content 130.6 +/- 15.2mg(66.2%). In mature and hyper mature cataracts, wet weight was 240.8 +/- 39.3mg, dry weight 53.4 +/- 8.3mg and water content 176.3 +/- 37.5mg(73.2%). Wet weight and water content were significantly increased and dry weight was significantly decreased with the maturation of cataract. Sexual differences of wet weight, dry weight and water content were not significant.
Cataract Extraction ; Cataract* ; Water*

During a four-week postoperative course, the central and peripheral corneal thicknesses of 23 intracapsular cataract extraction cases (only one case by extracapsular) were measured with the Mishima-Hedbys modification of the Haag-Streit Corneal Pachometer. The results were as follows: 1. Before surgery, the mean of the average central corneal thickness was 0.52 +/- 0.02(S.D.)mm in central part and 0.64 +/- 0.03mm in peripheral part. 2. During 2~3 postoperative days, the central corneal thickness was increased highly and its mean thickness was 0.70 +/- 0.08mm (34.6% increment), and there after the corneal thickness was found to be decreasing to the mean value of 0.53 +/- 0.03mm on 17~20 postoperative days which there was no significant difference from original thickness (P>0.05). 3. Peripheral corneal thickness also increased slightly (0.75 +/- 0.04mm, 14%increment) on 2-3 postoperative days and there after the peripheral thickness was gradually decreased to the original thickness up to 12~13 postoperative days (0.66 +/- 0.04mm, P>0.05) which reveals much earlier improvement than that of the central corneal thickness (17~20 POD).
Cataract Extraction ; Cataract*

The study aimed to investigate effect and experience in this surgical procedure. Subjects are eyes with mild and moderate level of lens laxation. The anterior lens capsule-preserved lensectomy was proved to be high effective. The preserved anterior lens capsule worked as a barrier, prevented the vitreous humor leaking to anterior chamber, limited complications and produced a support for posterior chamber lens implantation lately
Cataract ; Cataract Extraction ; Lenses

The changes of corneal curvatures were measured in 63 cataract cases before and 2 months after cataract extraction with the aid of ophthalmometer and photo keratoscope. The change of the cornea in the vertical curvature was shown to be greater than that of horizontal curvature, in cases of conventional large corneal incision(120-170 degrees) of cataract surgery. Vertical curvature of the cornea was decreased and horizontal curvature was increased. The corneal astigmatism before and 2 months after surgery were respectively 0.67D. and 1.56D. showing the difference of 0.89D.
Astigmatism ; Cataract Extraction* ; Cataract* ; Cornea

Postoperative hyphema following cataract extraction surgery is not usually a serious complication and clears quickly in the most cases. Sutureless cataract surgery was reported to have less incidence of postoperative hyphema than conventional cataract surgery. We analyzed the incidence of postoperative hyphema in each group according to the depth and the length of scleral pocket incision in 500 eyes with the sutureless cataract surgery via superior incision during two years. One day after surgery, 90 cases(18.0%) had hyphema and most of them(74.4%) showed grade 1 severity. The incidence of hyphema was 23.0% in the deep incision group and only 11.9% in the superficial incision group(p<0.01). The percentage of grade 1 hyphema was 66.6% in the deep group and 92.6% in the superficial group, then severity was greatly reduced in the superficial incision group(p<0.01). The incidence of hyphema in the group of 7.0 mm in length was highest among the 6.0, 6.5, 7.0 mm groups(p<0.01), and the shorter the incision length, the milder the serverity of hyphema(p<0.01). The incidence of hyphuma was the lowest(6.2%) in the group of 6.0 mm in length and superficial incision, and it was the highest(28.5%) in the 7.0 mm in length and deep incisional group(p<0.01).
Cataract Extraction ; Cataract* ; Hyphema* ; Incidence*

1. In total 33 cases of cataract, measurements of the corneal curvature(radius) were performed preoperatively and postoperatively. 2. Among 6 cases of below 40 year old, extracapsular cataract extraction were 5 cases. While 23 cases were done in intracapsular extraction among 27 cases of more than 40 year. 3. At two month after the operation, vertical and horizontal curvatures are closer to that of preoperative condition than in 1 month after the operation. 4. 2 month after the operation, vertical curvatures are getting flat in 66 %, while more cases showed tight horizontal curvatures than flat one.
Adult ; Cataract Extraction ; Cataract* ; Humans

The concentration of hyaluronic acid of rabbit vitreous was investigated after surgical procedures equivalent to intracapsular and extracapsular cataract extraction. Following intracapsular cataract extraction, the concentration of hyaluronic acid decreased significantly (79.0 +/- 55.7 ug/ml), whereas in eyes sujected to extracapsular cataract extraction, hyaluronic acid concentration was not significantly decreased(167.7 +/- 53.8 ug/ml).
Cataract Extraction ; Cataract* ; Hyaluronic Acid*

The 747 corneal epithelial erosion cases were evaluated clinically from January 1986 to February 1988 at Catholic University Medical College, St. Mary's Hospital. The results were as follows: 1. Out of 747 corneal epithelial erosion cases, 286 cases(38.3%) and 283 cases(37.9%) resulted from mechanical and postoperative causes, respectively. 2. The large number of cases were foung in the age group of 1 to 9 years(21.9%) and in the ages older than 60 years(l9.8%), which were in proportion to the said causes. 3. The onset of corneal erosion after cataract extraction within postoperative 3 weeks(56.1%) was most common. There were 115 cases(45.3%) in which corneal erosions developed after the cataract extraction lasted up to 2 weeks. 4. The cure rate of corneal erosion was 85.0%(635 cases), and in corneal erosion developed after cataract extraction was 89.8%(254 cases). 5. There was no statistical significance in the frequency of corneal erosions developed after cataract extraction among diabetics and nondiabetics.
Cataract Extraction ; Humans

Visual ; Cataract Extraction

Hospitals, General ; Cataract Extraction