Turkish Abstract Abstract PDF Similar Articles

¹Celal Bayar Ünivesitesi Tıp Fakültesi Göz Hastalıkları A.D., Manisa, Uzm. Dr.
²Celal Bayar Ünivesitesi Tıp Fakültesi Göz Hastalıkları A.D., Manisa, Prof. Dr.
³Celal Bayar Ünivesitesi Tıp Fakültesi Göz Hastalıkları A.D., Manisa, Yard. Doç. Dr. Purpose: To investigate the relationship between central corneal thickness (CCT) and intraocular pressure (IOP) measurements obtained with Pascal dynamic contour tonometry (DCT), noncontact tonometer (NCT), Goldmann applanation tonometry (GAT), and TONO-PEN.
Materials and Methods: Four hundred eighty eyes of 240 healthy individuals and ocular hypertension patients were included in the study. After central corneal thickness (CCT) was measured in all eyes with ultrasonic pachymetry, IOP was measured with DCT, GAT, NCT and TONO-PEN, at 5-minute intervals, in random order. Correlations between IOP measurements from these tonometers and CCT were statistically analyzed.
Results: In eyes with thin corneas (below 520 μm), there was no correlation between CCT and DCT measurements, while all other tonometers were influenced by CCT. In eyes with normal thickness corneas (520-580 μm), the weakest correlation with CCT and IOP measurements was seen with DCT and TONO-PEN. In eyes with thick corneas (above 580 μm) TONO-PEN had the weakest correlation with CCT, while GAT, DCT, and NCT measurements correlated with CCT.
Conclusions: It should be kept in mind that CCT values might affect tonometric measurements of IOP, especially in glaucoma clinics and in patients who have undergone refractive surgery. Our findings indicate that DCT, with its potential for measuring IOP independently from CCT, will be used alongside GAT in the future. Keywords : Central corneal thickness, intraocular pressure, tonometer