Case 2 - OCULUS Pentacam Interpretation Manual

9 Glaucoma
She underwent a prophylactic laser peripheral iridectomy in both eyes, following which ACV
increased from 64 to 94 μm, ACA widened from 19.7 to 26.4 degrees and ACD deepened from 1.83
to 2.08 mm.
We previously demonstrated that a cutoff value of 113 mm3 for ACV discriminates narrow angles
with 90% sensitivity and 88% specificity [3,4]. The positive and negative likelihood ratios for ACV
in that study were 8.63 (95% coincidence interval (CI) = 7.4-10.0) and 0.11 (95% CI = 0.03-0.4),
respectively.

9.3.2 Case 2

A 50-year-old Indian female patient presented for a routine eye exam. Her vision was 20/20
in both eyes. She was found to have a shallow anterior chamber on slitlamp biomicroscopy.
Gonioscopy showed Shaffer's Grade 1 in all quadrants in both eyes. These findings were confirmed
by Scheimpflug images showing a shallow ACD of 2.03 mm in OD and 2.08 mm in OS. The ACV was
95 mm in OD and 95 mm
3
ratio was 0.5 in both eyes. Central corneal thickness was 540 μm in OD and 559 μm in OS. Her IOP
was 19 mmHg in OD and 18 mmHg in OS
Figure 50: General Overview display showing a low ACV, shallow ACD and narrow angle in OD
42
in OS. The ACA was 20.7 degrees in OD and 26.4 degrees in OS. The ACD
3
(Figure 50, Figure 51).