A corneal ulcer caused by infection is one of the major causes of blindness worldwide. One of the recent health concerns is the increasing incidence of corneal ulcers associated with contact lens user especially if the users fail to follow specific instruction in using their contact lenses. Risk factors associated with increased risk of contact lens related corneal ulcers are: overnight wear, l...

The mechanics governing the fit of a soft contact lens on the eye are examined through the development of a finite element analysis model. A linearly elastic lens is placed on a rigid eye with a lubricating viscoelastic tear layer. The mechanics of fit are described in terms of the pressure distribution through the tear layer, the contact pressure at the lens/tear interface, the tear film thick...

Purpose: To report a rare case of acute red eye in contact lens user.Case summary: An 18-year-old female presented with decreased visual acuity and ocular pain the right for 4 days. The patient had used lenses > 8 hours day, even while sleeping at night, past 3 months. Corneal epithelial edema punctate stromal infiltration along diffuse conjunctival hyperemia corneal limbal injection were ob...