An auto refractors is just a computer-controlled machine used during an eye examination to provide an objective measurement of a person’s refractive error and prescription for glasses or contact lenses. This is achieved by measuring how light is changed as it enters a person’s eye.
A cover test is an objective determination of the presence and amount of ocular deviation performedby qualified Professional Optometrist in Malaya Optical during eye examinations.
The Hirschberg test, also Hirschberg corneal reflex test, is a screening test that can be used to assess whether a person has strabismus (ocular misalignment). The pupillary light reflex is a reflex that controls the diameter of the pupil, in response to the intensity (luminance) of light that falls on the retina of the eye. Greater intensity light causes the pupil to become smaller (allowing less light in), where as lower intensity light causes the pupil become larger (allowing more light in). Thus, the pupillary light reflex regulates the intensity of light entering the eye.
Ocular motility should always be tested, especially when patients complain of double vision or when a qualified Optometrist in Malaya Optical suspect neurological disease.
The pupil is the sphere that is located in the center of the iris of the eye and that controls the amount of light that enters the eye. It appears black because most of the light entering the pupil is absorbed by the tissues inside the eye.
The slit lamp is an instrument consisting of a high-intensity light source that can be focus to shine a thin sheet of light into the eye. It is used in conjunction with biomicroscopy. The lamp facilities the examination of the anterior segment, or frontal structures and posterior segment, of the human eye, which includes the eyelid, sclera, conjunctiva, iris, natural crystalline lens and cornea.The binocular slit-lamp examination by a qualified Professional Optometrist provides stereoscopic magnified view of the eye structure in detail, enabling anatomical diagnoses to be made for a variety of eye conditions.
Retinoscopy is a technique to obtain an objective measurement of the refractive condition of a patient’s eyes. The examiner uses a Retinoscopy to shine light into the patient’s eye and observes the reflection (reflex) off the patient’s retina. While moving the streak or spot of light across the pupil the examiner observe the relative movement of the reflex then uses a pheropter or manually places lenses over the eye to “neutralize” the reflex.
The refraction test is an eye exam that measures a person’s ability to see an object at a specific distance. A period of time given for the patient to adapt to the new prescription by the qualified Professional Optometrist.