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Br J Ophthalmol 2003;87:399-402 doi:10.1136/bjo.87.4.399
  • Singapore SERI-ARVO Meeting

Ocular biometry in occludable angles and angle closure glaucoma: a population based survey

  1. R George1,
  2. P G Paul1,
  3. M Baskaran1,
  4. S Ve Ramesh1,
  5. P Raju1,
  6. H Arvind1,
  7. C McCarty2,
  8. L Vijaya1
  1. 1Glaucoma Project, Vision Research Foundation, Sankara Nethralaya, Chennai, India
  2. 2Marshfield Medical Research Foundation, WI, USA
  1. Correspondence to: Dr Lingam Vijaya, Medical and Vision Research Foundation, Sankara Nethralaya, 18 College Road, Chennai, India - 600 006; chennaigs{at}rediffmail.com
  • Accepted 6 January 2002

Abstract

Aim: To compare ocular biometric values in a population based sample of eyes with occludable angles, angle closure glaucoma, and normal subjects.

Method: 2850 subjects from a population based glaucoma prevalence study underwent complete ocular examination including indentation gonioscopy. Ocular biometry was performed in all subjects classified to have occludable angles (n = 143); angle closure glaucoma (n = 22), and a random subgroup of 419 normal subjects. Ocular biometry readings between the groups were compared and statistically analysed using “t,” “z,” and Mann-Whitney U tests.

Results: The mean age among subjects with occludable angles (54.43 (SD 9.53) years) and angle closure glaucoma (57.45 (8.5) years) was significantly higher (p<0.001) than normal subjects (49.95 (9.95) years). Axial length was shorter (p<0.001) in the occludable angle group (22.07 (0.69) mm) compared to the normal group (22.76 (0.78) mm). Anterior chamber depth (ACD) was shallower (p<0.001) among subjects with occludable angles (2.53 (0.26) mm) than normal subjects (3.00 (0.30) mm). Lens thickness (LT) was greater (p<0.001) in people with occludable angles (4.40 (0.53) mm) compared to normal subjects (4.31 (0.31) mm). No significant difference was noted in axial length, ACD (p = 0.451), and LT (p = 0.302) between angle closure glaucoma and occludable eyes.

Conclusion: South Indian eyes with angle closure glaucoma and occludable angles seem to have significantly shorter axial lengths, shallower anterior chambers and greater lens thickness compared to the normal group.

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