Abstract :
Aim: To compare ocular biometric features of chronic angle closure glaucoma patients with normal
subjects.
Materials and Methods: 35 chronic angle closure glaucoma patients (group A) were compared with 35
normal subjects (group B). Chronic angle closure glaucoma was diagnosed in eyes with peripheral anterior
synechiae [PAS] of > 270 degrees with a chronically elevated IOP with disc and field changes. Patients
with history of intraocular surgeries or trauma, secondary angle closure, active keratitis or corneal opacities,
previous history of Nd Yag laser peripheral iridotomy and those on miotic drops were excluded. Contact
ultrasonic biometry was used for measuring ocular biometric parameters like axial length, AC depth, and
lens thickness. LAF and RLP were calculated. Statistical analysis: Chi-square test and Independent sample
t-test as applicable.
Results: Mean age, gender distribution and axial length measurements in both the groups were comparable.
Lens thickness and LAF were significantly higher in Group A (p and RLP were significantly lower in group A. Pachymetry, best corrected visual acuity and spherical
equivalents were comparable in both groups.
Conclusion: It is concluded that the mechanism of chronic angle closure glaucoma can be explained by the
ocular biometric parameters with possibility of some additional factors like variations in the iris thickness/
insertion.
Keyword :
Chronic, Ocular biometry, Primary angle closure glaucoma.