[Central corneal thickness measurement in normal tension glaucoma]

To evaluate corneal thickness in eyes with normal tension glaucoma.

CCT (measured by specular microscope Topcon SP2000P) was evaluated in 70 eyes of 39 patients with diagnosed NTG, 35 women and 4 men in age 31-78 years (mean 68 years).

Mean central corneal thickness measured by the specular microscope (between 11 and 1), was 523.7 microm in range 465-575 microm. Impact of CCT on results of Goldman aplanation tonometry was detected in 55.7% of NTG eyes--overestimated in 20% and underestimated in 35% of them. Corrected maximal IOP > 21 mmHg, was found in 14% of NTG eyes.

Central corneal thickness measurement should be part of routine ophthalmological examination in glaucomatous patients (especially in NTG), being helpful in choice of optimal therapeutic strategy.