Cardia, G.

Procoli, U.

Trabucco, T.

Vetrugno, M.

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P 304 Title: Computer analysis of optic nerve head photographs: The difference between real and filtered images 

P 304 P306 
P 305 
TITLE: INTRAOCULAR PRESSURE IN DIABETIC AND NON- 
DIABETIC PATIENTS. AN EPIDEMIOLOGICAL STUDY. 
MACARRD A., BUENO J.,VIZCAINO F., FERNANDEZ-VIGO J. 
Department of Ophthalmology. University of 
Extremadura. 
PurLlose: The association diabetes-glaucoma has 
been controversial for several years. In previous 
papers we found no differences in prevalence of 
glaucome in diabetic and non-diabetic population. 
In this work we compare the intraocular pressure in 
a diabetic population vsrsus a non-diabetic 
population. 
Methods: We performed a cross-sectional study to 
determine the intraocular pressure in 3 samples of 
the population of Extremadura. 1200 diabetic 
patients, 417 controls (spouses of diabetic 
patients) and 1557 controls. Ophthalmic exploration 
included: tonometry. visual acuity, biomicroscopy, 
ophthalmoscopy and fundus photography. Statistical 
analysis: Student-t test and Kruskal-Wallis. 
Results: The mean intraocular prsssurs was: 
i)Oiabetic patiens: 14.32f3.2 mmHg; 2) Control 
(417 patients): 15.36 f 3 mmlig: 3) Control (1557 
patients): 15.3Sf3.8 mmHg. Intraocular pressure 
varies significantly with age of the patients in 3 
samples. We have compared the intraocular prsssurs 
of diabetic patients with controls (attending ag8 
and sex). We found that diabetic Datients have 
lower intraocular pressure than controls (~(0.05). 
Conclusions: Some authors showed that diabetic 
patients have intraocular prassura higher than 
normal population. In our work, we found that both 
control groups have higher intraocular pressure 
than diabetic patiets, but although this difference 
is statistically significative we think that hasn’t 
clinical consequences.We cann’t conclude that 
diabetic oatiens have higher intraocular pressure 
than non-diabetics. 
P 307 
THE EFFECT OF PERIBULUAK ANAESTHESIA ON 
INTRAOCULAR PRESSURE 
IM. Assoulinc, 2A. Zarvha, ZA. Goldstein , ZJM Legrq1C. IZcn;ml 
and ‘Y. Pouliquen 
‘Dpt of Ophthalmology, lnscrm U86, 21)epartment of Anacsthcsiology; 
lli%el-Dicu de Paris, Frsncc 
Purpose: To investigate the effect of higher drug volumes on intraocular 
pressure (IOP) variation following peribulbar anesthesia (PBA). 
Methods: 68 informed patients, candidate lo cataract surgery, were 
prospectively assigned to receive either 12 ml (Group I. n=32), I6 ml 
(Group II. n=26) or 12 ml (Group III. n=8. primary open angle glaucoma) 
o~bupiv;sainc 0.5%. sylocninc 2% (50150) will1 hy;duronid;~sc (I 2.5 u/inl). 
101’ was measured using a Mentor ‘Tonopen XL. belbre and imtnediatly 
nlicl- injection. then I5 mn Ihlllowing orbllnl compl-cssion sc( at 30 mm I lg. 
Ilcsults: 101’ inctcase following injection was signilicat~tly higher in IIIC I6 
ml group (+105*71%) than in the I2 ml group (+45+61%, p<O.OOl). A 
subset of 2 patients from the I2 ml group (6.25%) and 6 patients from the 
I6 1111 group (23%). had uncompleted injections (UI) due to limiting orhiial 
scplum Icnsion. ‘I’hcsc p:llicnls h:~d a signiliwllly hi&r lx cswc rise alicr 
injeclion (+108+42% liir Ul”l2 ml”. +247+49% for UI”l6ml”. p<O.OO I and 
p<O.OOl). Glaucoma patients had a higher IOP before and slier injccrioo. 
but variation in IOP was no1 significantly difierent rrom group I. 101’ 
returned to baseline values after compression in group I and II, and was 
lowered in group III (p<O.Ol). Quality OF analgesin/akinesia (scmi- 
quantitative scales), was not at’lecred by injection volt~mc. 
Conclusion: Standard injection volumes, clinical monitoring of septal 
tension and compression may prevent detrimental pressure rise during PBA 
s205 


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P 304 Title: Computer analysis of optic nerve head photographs: The difference between real and filtered images

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