Abstract:
Different methods and techniques are used by doctors/practitioners throughout the world to
Perform eye vision test. Among all the methods Snellen chart is mostly used in all regions for
Eye vision test. The major drawback of this old technique includes that there is no symmetry in
The process, that is, the test is conducted in different steps in different environment by different
Doctors which causes variation in results.
Moreover, errors are caused by Humans / practitioners while performing the test and these errors
may be due to workload, Mood or health of the doctor which may affect the final result of the test
by a significant Margin. Acuity test may also get effected due to increased number of patients
operated by a Single doctor. All these factors and possibly more can affect the test and lives of the
patients.
Snellen chart based method is the most common method used in the world but these methods
Are vulnerable to many errors that including environmental and human errors. Moreover, these
Tests are expensive to take, that is, the cost of equipment, qualified doctors and their high pays,
Proper lightened environment and so on. Other common problems include long awaiting
Appointments, unavailability or non-seriousness of practitioners etc. Problems such as these
Mostly arise in remote areas where there is lack of supervision and balance of the system.
