Objective To compare the ocular biometry and build up the normative database in cataract patients older than 50 years from Tibet， Xinjiang and Guangdong. To provide reference data for cataract patient in different areas. Methods This study nonrandomly selected one thousand nine hundred ninty four eyes from 1 994 subjects aged ＞50 years. Subjects from Tibet， Xinjiang and Guangdong were 249， 615 and 1 080 respectively. All subjects received cataract surgeries on Lifeline Express from 2007 to 2008. A-scan ultrasound and auto keratometer were used to measure axial length （AL）， anterior chamber depth （ACD）， lens thickness （LT）， vitreous cavity depth （VH）， vertical and horizontal keratometry， vertical and horizontal radius of corneal curvature. Normative data of all measured ocular biometry were determined and compared for the three areas. ANOVA and Hotelling T2 test was used for data analysis. Results For female subjects form Tibet， Xinjiang and Guangdong， the mean AL were 22.52±0.79 mm， 22.63±0.68 mm and 22.80±0.84 mm， the mean ACD were 2.63±0.43 mm， 2.81±0.42 mm and 2.74±0.41 mm， the mean LT were 3.95±0.45 mm， 4.16±0.54 mm and 4.11±0.52 mm respectively. For male subjects， the mean AL were 22.97±0.80 mm， 23.19±0.70 mm and 23.23±0.77 mm， the mean ACD were 2.81±0.49 mm， 2.95±0.43 mm and 2.78±0.44 mm， the mean LT were 3.98±0.48 mm， 4.19±0.54 mm and 4.22±0.55 mm respectively. Significant difference was found for AL （male F=4.781， P<0.01， female F=7.324， P<0.01）， LT （male F=8.835， P<0.01， female F=8.446， P<0.01） and ACD （male F=8.914， P<0.01， female F=5.903， P<0.01） among three areas. For male patients， AL and LT of Guangdong and Xinjiang were larger than Tibet （all P<0.05）. ACD of Tibet and Guangdong was larger than Xinjiang （all P<0.05）. For female patients， AL of Tibet and Xinjiang was smaller than Guangdong （all P<0.05）. ACD and LT of Guangdong and Xinjiang were larger than Tibet （all P<0.05）. Keratometry was largest in Guangdong and smallest in Xinjiang （all P<0.05）. Conclusion This study built up the normative database of ocular biometry in three areas and found biometry was different with sex and areas. Ocular biometry is different among areas with different races and environmental factors. Cautions should be exercise in clinical practice in these areas.
王耿,陈彬,张铭志. 西藏、新疆及广东白内障患者眼生物学参数的比较[J]. 中华眼视光学与视觉科学杂志, 2014, 16(7): 441-445.
Wang Geng,Chen Bin,Zhang Mingzhi. Normative data of ocular biometry in cataract patients from Tibet， Xinjiang and Guangdong. Chinese Journal of Optometry Ophthalmology and Visual science, 2014, 16(7): 441-445. DOI: 10.3760/cma.j.issn.1674-845X.2014.07.0013
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