**7.1 Evaluation of glaucoma treatment**

As a general principle, the physician must evaluate, if it is possible, to:


#### **7.2 Ocular surface management: basic treatment**

### *7.2.1 Non preserved eyedrops*

Cochrane reviews reports no difference in OTC (over the counter) artificial tears [43]. Preserved agents use alternative preservatives to BAK and may be considered because of the decreased cost, increased availability, and the convenience of standard multi-dose containers, non-preserved agents are preferred and should be considered wherever possible [44].

### *7.2.2 Heating devices*

External eyelid heating devices have demonstrated efficacy in reducing surface staining scoring, improving TBUT and meibomian gland secretions, optimally with continued 2 times per day applications of ≥5 minútese [45, 46].

### *Glaucoma and Dry Eye DOI: http://dx.doi.org/10.5772/intechopen.98799*
