To determine the impact of contact lens (CL) wear on the ocular surface and Meibomian glands (MG).
Materials and Methods: 24 silicone hydrogel CL wearers for a minimum of 5 years (Group 1) and 26 healthy volunteers (Group 2) were included in this retrospective study. Best corrected visual acuity, Oxford scoring, tear film break-up time (T-BUT), Schirmer 1 test, Ocular Surface Disease Index (OSDI) scoring and MG evaluation by infrared captures of optic coherence tomography (OCT) were performed. Loss of the MG was scored blindly by a single researcher.
Results: The mean age was 30.00±6.22 in Group 1 and 28.70±4.95 in Group 2 (p=0.300). Male/female ratio was 4/20 in Group 1 and 9/17 in Group 2. The average duration of CL wear was 10.70±2.70 years. The mean T-BUT in Group 1 and 2 were 17.70±76.74 and 24.76±8.06 sec, respectively (p=0.002). The mean Schirmer 1 test in Group 1 and 2 were 29.04±7.67 and 25.50±8.48 mm, respectively (p=0.129). The mean Oxford scale staining in Group 1 and 2 were 0.58±0.94 and 0.15±0.41, respectively (p=0.040). The mean OSDI scores in Group 1 and 2 were 29.36±19.25 and 23.63±21.99, respectively (p=0.334). The average upper, lower eyelid, and total meiboscores in Group 1 and 2 were 0.95±0.87, 0.66±0.73, 1.60±1.40 and 0.67±0.59, 0.67±0.70 and 1.34±1.17, respectively. No statistical significance was detected in any of these scores.
Conclusion: CL wear has a variety of effects on ocular surface. MG has a significant influence on ocular surface. Meiboscoring is an effective and practical way for evaluation of the MG.