Ultrasound biomicroscopic and conventional ultrasonographic study of ocular dimensions in primary angle-closure glaucoma1
Section snippets
Patients
A total of 54 eyes of 54 white patients with angle closure glaucoma (ACG) were considered in this study. Special types of ACG, such as “plateau iris” and spherophakia, and secondary ACG (lens intumescence or subluxation, trauma, iris neovascularization) were specifically excluded. The clinical case material comprised 10 acute, 22 intermittent, and 22 patients with chronic PACG 64 years of age ± 8 years (range, 43–78 years). The male-to-female ratio was 13:41 (76% women). The diagnosis was based
Conventional A-scan ultrasonography
The results of the A-scan biometric study are given in Table 2. In patients with PACG, the axial length was significantly shorter, the anterior chamber shallower, and the lens thicker and more anteriorly located than in normal individuals. The LAF of patients with PACG was significantly greater than in normal subjects.
In patients with PACG, there was no difference in axial length between the acute/intermittent and the chronic cases. The eyes with acute/intermittent PACG, however, were
Conventional A-scan ultrasonography
The biometric features encountered in our series of patients with PACG are no different from those widely reported in white subjects.1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Compared to normal eyes, the PACG eyes examined in our study were characterized on the whole by a shorter axial length, a distinctly shallower anterior chamber, a thicker lens, and, as indicated by the RLP, a more anteriorly situated lens. This results in a higher LAF with a difference compared to normal that
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Conducted on behalf of the Regional Council of the Veneto Region, Finalized Health Research, Venice, Italy.