ASPHERIC LENSES
Aspheric lenses have non-spherical shapes, and have a more complex front surface, such as ellips, parabola, hyberbola, as well as toric which resembles a section of the surface of a…
Abnormal retinal correspondence
In a state of normal binocular single vision, there exists a precise physiological relationship between the corresponding points of the two retina. Thus, the foveae of two eyes act as…
PROCEDURE OF RETINOSCOPE
The retinoscope consists of a light, a condensing lens that concentrates the light, and a mirror. During the procedure, our doctors use the retinoscope to shine light through the pupil, then…
Spasm of accommodation
Introduction - A spasm of accommodation (also known as a ciliary spasm, an accommodation, or accommodative spasm) is a condition in which the ciliary muscle of the eye remains in…
PHYSIOLOGOCAL ASPECT OF ACCOMODATION
Physiological accommodation: The accommodation reflex is the visual response for focusing on near objects. It also has the name of accommodation -convergence reflex or the near reflex. It is a…
Management of Asthenopia
Asthenopia, though annoying, isn’t serious and doesn’t cause permanent vision or eye problems. Limiting screen time, taking breaks, and making a few adjustments to your surroundings and daily habits is…
Causes Of Asthenopia
Asthenopia is a term used to describe a sense of strain and weakness or ocular fatigue set up by the use of the eyes (a = not, sthenos = strengh,…
INSUFFICIENCY OF ACCOMMODATION
The term insufficiency of accommodation is used, when the accommodative power is significantly less than the normal physiological limits for the patient’s age. Therefore, it should not be confused with…
PRESBYOPIA
Hey have you ever notice that most of the middle age persons always put a spectacle before going to start any near work like reding, writing etc. If you are…
STRUCTURE OF TEAR FILM
The value of tear flude of preserving a clear cornea has been understood sinces ages. The fact that the blinking action of lids was esentioal foe spreading the tears and…
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