The Relationship Between the Changes of the Corneal Curvatures and Histopathologic Findings in Pterygia

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(p0.05).

Survey on the Visual Impairments and Ocular Health Status in Urban School Students

As a partial effort of the survey in the National Plan for the Eye Health, the analysis of the visual impairment mainly refractive errors among 4,004 School Children in Seoul(1986) with the ancilliary questionnaire on various conditions was attempted. The number of the student with subnormal vision(0.7 or less) was 1,552(38.8 %), and this rate was increased with the higher school grade. Of the 2,551 eyes with subnormal vision(0.7 or less), the confirmed refractive errors consisted of myopia 2,170(78.7%), hyperopia 237(8.6%), and mixed astigmatism 144(5.2%) eyes. The number of glasses wearer among the students of vision 0.5 or below(1,129) was 770(63.2%), of which the under-corrected cases 380(49.3%) weregreater in number with the over corrected cases. The causes of not-wearing glasses in the students who belonged to the vision 0.5 or below indicated in prominence of numbers of 1) no complaints without glasses in 172(42.0%), 2) unwareness of the visual impairment in 77(20.0%), and 3) annoyance to wearing glasses in 51(13.4%), rather than economical reasons in 12(3.1%). The amblyopic components were estimated among 129 cases(3.2%) in combination of refractive errors. Further program to supply the glasses with appropriated prescription and the details on the practical aspects of related elements would be discussed.

A Case of Corneal Ulcer Caused by Paecilomyces in Diabetic Patient Wearing Soft Contact Lens

Fungal corneal ulcer is well known longstanding and troublesome disorder in eye clinic. Paecilomyces, a well known saprophytic fungi, is rarely pathogenic in normal humal being. Authors experienced a case of corneal ulcer caused by Paecilomyces in diabetic patient wearing soft contact lens, that was proved by Gram stain and Sabouraud agar culture. We report this as the first case of corneal ulcer caused by Paecilomyces in Korea.