No abstract available.
Pterygium

No Abstract Available.
Pterygium*

Summary: 1. Author noticed that seventeen different surgical methods were found. 2. McReynolds did first operation for pterygium in 1902. 3. The radiation therapy was started in 1958.
Pterygium*

PURPOSE: We examined changes in the corneal curvature and recurrence rate following pterygium surgery with relation to pterygium size and morphology. METHODS: One hundred eyes with primary nasal pterygia were graded as atrophic(Group 1), intermediate (Group 2), or fleshy(Group 3) according to morphology and grouped as small area group or large area group according to an assessment of pterygium length from and along the limbus. Corneal curvature was measured with autokeratometer at 3 days, 1 week, 1 month, and 6months preoperatively and postopera-tively as well. Recurrence was evaluated at the same periods. RESULTS: Each group had no significant difference(p>0.05) to preoperative corneal curvature when pterygia were divided according to morphology. Large area group had significantly smaller corneal curvature than the preoperative one(p<0.05), but small area group didn't(p>0.05). The angle of astigmatism had the tendency of against-the-rule at 3 days postoperatively(163.3degrees), more strikingly in small area group(159.1degrees). The recurrence rate was 10% totally with no significant difference among each group(p>0.05). CONCLUSIONS: The magnitude of the corneal curvature following pterygium surgery was smaller than the preoperative one and the change of angle had the tendency of against-the-rule astigmatism. Surgically induced changes in the corneal curvature and recurrence rate related to morphology had no significant difference, but preoperative corneal curvature and postoperative changes were related to pterygium size.
Astigmatism ; Pterygium* ; Recurrence*

The purpose of this study is to find out what changes occur in the corneal curatures before and after the operation for pterygium and the relationships between the histopathologic findings and the various factors concerned with pterygium. The results are as follows: 1. The degree of corneal invasion of the pterygium head is closely related to the difference between the horizontal and vertical corneal curvatures before operation. 2. The difference between the horizontal and vertical corneal curvatures decre ase after operation. 3. The changes in horizontal curvatures are remarkable in 3 weeks after surgery with a mean change of +0.41 D. 4. In the histopathologic findings, the duration of pterygium and the increased amount of collagen fiber are significantly related(p<0.01). 5. There is no relationship between the histopathologic findings and the changee in corneal curvatures analysed by the SPSS program (p>0.05).
Collagen ; Head ; Pterygium

PURPOSE: In this study we evaluated the changes in tear film after primary pterygium operation in patients with pterygium. METHODS: We investigated 43 eyes of 42 subjects who showed successful results 3 months after pterygium operation performed by one surgeon. The changes in tear film thickness, tear break-up time (BUT), Schirmer I test, and ocular surface disease index (OSDI) were evaluated. All values were compared before and after surgery. RESULTS: The mean age was 58.0 +/- 11.1 years (34-81 years). Preoperative tear film thickness, tear BUT, and Schirmer I test in eyes which underwent pterygium operation were 21.53 +/- 5.93 microm, 4.84 +/- 2.21 seconds, and 11.67 +/- 6.75 mm, respectively. Three months after the operation, the respective values were 24.23 +/- 4.19 microm (p < 0.05), 5.81 +/- 1.89 seconds (p < 0.05), and 13.02 +/- 7.54 mm (p = 0.094). Tear film thickness and BUT score increased significantly after pterygium operation. There was no statistically significant difference in Schirmer I test, before and 3 months after pterygium operation. The subjective parameter (OSDI) improved 3 months after pterygium operation (p = 0.015). CONCLUSIONS: Pterygium operation can partially restore the tear film function into a normal state by improving tear film thickness and tear BUT after pterygium operation.
Humans ; Pterygium* ; Tears*

Between Jan. 1971 and Dec. 1974, 324 eyes which received Sr90 irradiation postoperatively at Severance Hospital and 819 eyes which received Sr90 irradiation postoperatively at a private eye clinic were observed. Among 324 eyes which received postoperatives Sr90 irradiation at Severance Hospital and 819 eyes which received postoperatives Sr90 irradiation at a private eye clinic, the incidences of recurrence were 3.4% and 3.3%.
Incidence ; Pterygium* ; Recurrence

Between Jan. 1971 and Dec. 1974, 324 eyes which received Sr90 irradiation postoperatively at Severance Hospital and 819 eyes which received Sr90 irradiation postoperatively at a private eye clinic were observed. Among 324 eyes which received postoperatives Sr90 irradiation at Severance Hospital and 819 eyes which received postoperatives Sr90 irradiation at a private eye clinic, the incidences of recurrence were 3.4% and 3.3%.
Incidence ; Pterygium* ; Recurrence

In 24 pterygium patients, the corneal curvature was measured before and after surgical removal. The norizontal curvature increased more than 0.5 D in 66.7% of cases on the 2 to 3 weeks postoperatively. The vertical curvature, however, showed no marked tendency to changes, and only 25% of cases showed more than 0.5 D increase on the 2 to 3 weeks postoperatively. As the pterygium invades the cornea extensively, the horizontal corneal curvature increased more markedly.
Cornea ; Humans ; Pterygium*

The pterygia is an ocular diseases with a multifactorial etiology and is found more commonly in tropical areas such as Vietnam. The surgical treatment of pterygia is still a big challenge to opthalmologists due to high rate of its recurrent. In this study we performed the conjunctival autograft transplantation (CAT) on 66 patients (81 eyes) of recurrent pterygia with dramatically success: 79 eyes (97.5%) have excellent and good results. There are 2 eyes (2.5%) have light proliferation of fibrovascular tissue in the border of graft. This study showed that CAT is good procedure for preventation of recurrent pterygium and should be applied popularly in the departments of ophthalmology of the provinces.
Pterygium ; Transplantation, Autologous