Anterior Chamber Depth, Corneal Thickness and Corneal Endothelial Change following Decreased Intraocular Pressure

PURPOSE: To determine the intraocular pressure (IOP) lowering effects on the change of anterior chamber depth (ACD), corneal thickness, corneal cell area and density in normal eyes. METHODS: We investigated 58 eyes of 29 volunteers for this study whose refractive error was +/-3 D, IOP was below 21 mmHg, anterior segment and fundus was within normal limit. All of them had normal visual fields. They were randomly classified into two groups. Anterior chamber depth, IOP, central corneal thickness, cell density, cell area, and coefficient of variation of corneal endothelium were measured by single observer in each group. After oral medication of 50% glycerin 1 cc/kg (body weight) in group 1 and Diamox 500 mg and K-contin 600 mg in group 2, IOP, anterior chamber depth, central corneal thickness, cell density, cell area, and coefficient of variation were measured at 1, 2, and 3 hours. RESULTS: In glycerin group after 1 hour, decreased IOP was stastically significant (P0.05). There was no significant correlation between decreased IOP and the change of anterior chamber depth, central corneal thickness, cell density, cell area, and coefficient of variation. The IOP change was not statistically different between the two groups. CONCLUSIONS: There was no stastically significant correlation between decreased IOP in normal range and the change of ACD, central corneal thickness, cell density, cell area, and coefficient of variation.

Clinical Results of Unilateral Medial Rectus Recession in Consecutive Esotropia and Non-accommodative Esotropia

PURPOSE: To compare the effect of medial rectus recession in consecutive esotropes who had previous monocular medial rectus resection and lateral rectus recession and in non- accommodative esotropes (NAET) with small angle of deviation who had no prior operation. METHODS: We studied the results of unilateral medial rectus recession at postoperative 2 and 6 months in 7 consecutive esotropes and 19 NAET with deviation angle around 20 PD, and analyzed the corrected amount for 1 mm medial rectus recession. We regarded deviated angle of+/-8 PD at orthophoria as successful operation. RESULTS: The abosolute value of remained deviation in consecutive esotropes and NAET were 4.86+/-5.67 PD and 9.05+/-3.95 PD at postoperative 2 months, and 5.42+/-7.89 PD and 8.26+/-4.45 PD at postoperative 6 months, respectively. There were significant differences between at postoperative 2 and 6 months (p0.05). The average amount of corrected deviation for 1 mm recession at postoperative 6 months was 5.84 PD in consecutive esotropes and 2.97 PD in NAET, which were significant differences (p<0.05). CONCLUSION: Unilateral medial rectus recession in consecutive esotropes may be a useful and first choice of operation procedure when considering second operation. The amount of correction for 1 mm medial rectus recession is larger in consecutive esotropes than in NAET, possibly due to previous resection of medial rectus or release of fat adhesion. Therefore the amount of medial rectus recession in consecutive esotropia should be determined after considering the degree of abduction and operative findings.

Atypical Inflammatory Orbital Pseudotumor with Acute Pneumonic Infiltrates

PURPOSE: Orbital pseudotumor is a nonspecific benign orbital inflammation without evidence of specific local or systemic cause. Orbital pseudotumor rarely displays predominant tissue eosinophilia without vasculitis. We report this rare case of eosinophilic orbital pseudotumor associated with acute pneumonic infiltrates. METHODS: A 27-year-old man visited our clinic because of painless swelling of the upper and lower lid and proptosis which developed 10 days ago. Subconjunctival mass showed severe eosinophilic infiltration, mild proliferation of capillaries, and non-necrotic vasculitis. We started steroid treatement under the diagnosis of atypical orbital pseudotumor with acute pneumonic infiltrates. RESULTS: At four days after starting steroid treatment, swelling of lids, proptosis and pulmonary infiltration disappeared. At four months there was no evidence of recurrence with the cessation of steroid.