Some investigations should be done to determine the condition of dry eye. These measurements alone are not sufficient. Daily life and situations at different times should also be considered. All of these should be brought together and dry eye should be evaluated.
Determination of corneal injury: The front lens of the eye, the cornea, is a very sensitive tissue. It is very much affected by thirst. The structure of the cells deteriorates, begins to peel off, tissue losses occur. If you look at it with cobalt blue with fluorescein paint, the damaged areas give a green view.
Tear density (osmolarity): The osmolarity of the tear, that is, its consistency and density, is also valuable. If it is less, it will become sedimentary. Sedimentation gives an image as burrs. It is in the state of the dirty eye and the stinging eye. The density should be at the normal level. The ophthalmologist essentially evaluates this at the time of examination.
Tear break time examination: It is tear tear cinema’s break up time. In dry eyes, this period is shortened.
Fluorescein, which gives color to the eye, is dripped. The patient looks fixed after blinking 3 times in a row. It is viewed with cobalt blue under the microscope. Fracture manifests itself as black dots. This break is around 10 seconds, which is considered solid. It shows dry eye for a shorter time.
(4,14+3.84 is the first time it breaks. The last break is 10.6 +4.01 seconds.)
Schirmer test: A special test paper in the form of a strip is folded and placed on the outer 1/3 of the lower eyelid from its appropriate place. Ask them to make normal eye movements.
Wetting less than 5 mm after 5 minutes is a cause of dry eye.
5-10 is a moderately suspicious dry eye condition. Must watch.
More than 10 mm indicates no dry eye.
