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Abstract #25565 Published in IGR 12-1
Relationship between diopter of myopia and non-contact intraocular pressure
Liu L -L; Xu Y -P; Liu Y; Wang J -HInternational Journal of Ophthalmology 2009; 9: 2121-2122
AIM: To observe association between the degree of myopia and non-contact intraocular pressure (IOP). METHODS: Two hundred and fifty-four eyes of 127 myopia patients aged 12 to 45 years old(mean 32.2 (plus or minus) 7.7) were selected. Non-contact IOP and degree of myopia were examined. They were divided into three groups by their spherical equivalent(SE): low myopia groups(LM) (-3.00D < SE (less-than or equal to)-0. 25D, n = 111), meta myopia groups (MM) (-6. 00D < SE (less-than or equal to)-3. 00D, n = 73) and high myopia groups(HM)(SE(less-than or equal to)-6.00D, n = 24). At corresponding time 46 eyes were selected randomly from 23 patients without myopia as non-myopic group(NM). Differences of IOP of the four groups were compared by analysis of variance, the correlation between degree of myopia and non-contact IOP by rectilinear correlation and the rate of patients with ocular hypertension to patients with or without myopia by (chi)(2) analysis. RESULTS: IOP of NM(15.32 (plus or minus) 3.07)is lower than that of LM(16.46 (plus or minus) 2.85, P = 0.032) and MM (17.90 (plus or minus) 3.37, P < 0.01), and there were statistical differences. There are no statistical differences in the IOP between HM and NM. There was no correlation between the degree of myopia and non-contact IOP (P = 0.543), and non-contact IOP of MM was higher than that of the other three groups (P = 0.002, P = 0.013, P < 0.01). The rate of myopia patients with ocular hypertension to patients with or without myopia was 8.65% and 2.5% respectively, and the difference was significant(P < 0.01). CONCLUSION: If the IOP is checked by non-contact tonometer, the low and media myopia patients seems to be easier to suffer from ocular hypertension than NM patients. IOP of MM is the highest, There is no difference of IOP between HM and NM, but the reason needs to be inspected furtherly. LA: Chinese
Y.-P. Xu. Department of Ophthalmology, Beijing Prison Administration Bureau Central Hospital, Beijing 100054, China. zhangxjiancg@163.com
Classification:
6.1.1 Devices, techniques (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
6.1.3 Factors affecting IOP (Part of: 6 Clinical examination methods > 6.1 Intraocular pressure measurement; factors affecting IOP)
