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    Corneal structure in tilted disc syndrome
    (Consel Brasil Oftalmologia, 2016) Gunduz, Abuzer; Polat, Nihat; Cumurcu, Tongabay; Demirel, ErsinErsan; Ozsoy, Ercan
    Purpose: To evaluate the central corneal thickness (CCT), corneal volume (CV), and anterior and posterior corneal surfaces using the Scheimpflug imaging system in patients diagnosed with tilted disc syndrome (TDS). Methods: The study group (Group 1) and the control group (Group 2) comprised 35 eyes of 35 age-, sex-, and refraction-matched cases. All cases underwent a full ophthalmic examination that included cycloplegic refraction, axial ocular length measurement, and Scheimpflug imaging. Results: The mean age was 34.68 +/- 15.48 years in Group 1 and 34.11 +/- 12.01 years in Group 2 (p = 0.864). The gender distribution was 18 males and 17 females in Group 1 and 16 males and 19 females in Group 2 (p = 0.618). All subjects were Caucasian. The spherical equivalent was 3.62 +/- 1.75 D in Group 1 and 3.69 +/- 1.51 D in Group 2 (p = 0.850). There was no significant difference in age, sex, race, or spherical equivalent between groups. There was no significant difference in mean keratometric value and CV3 (the CV in the central 3 mm) between groups (p = 0.232 and 0.172, respectively). There were statistically significant differences in CCT, CV5, and CV7 (CV in the central 5 and 7 mm(3), respectively) and total CV between groups (p = 0.008, 0.003, 0.023, and 0.019, respectively). The values of all parameters were lower in the study group than in the control group. There was also a statistically significant difference in the anterior elevation parameters of the cornea between groups (p < 0.05). The mean values of Group 1 were higher than those of Group 2. There were statistically significant differences in the two parameters referring to the posterior elevation of the cornea between the two groups (p < 0.05). Conclusion: The results of this study showed that eyes with TDS have thinner CCT, lower CV, and different anterior corneal curvature than normal eyes.