Refraction through spherical lenses
Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…
Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…
The significant increase in the use of digital screens in our daily life requires advanced research to avoid possible ocular damage (1). The use of a digital screen affects the…
Convergence insufficiency has an excellent prognosis in the majority of cases.children are treated when fusional vergence are poor and the patient is showing signs of becoming exotropic . Adults with…
Low vision is vision loss that can’t be corrected even with glasses, contacts, medication, or surgery. You might have some vision, but it’s hard to do everyday activities like reading…
Extraocular muscles consists of six muscles which controls the movement of the eye , six muscles name is superior rectus, inferior rectus , medial rectus ,lateral rectus , superior oblique…
Firstly, we know about Conjunctiva, it is a transparent mucous layer underlying the eyelids & cover the sclera up to limbus area. Conjunctivitis is inflammation of Conjunctiva with a discharge…
Vernal keratoconjuctivitis (VKC) is a recurrent, bilateral, external, ocular inflammation primary affecting boys & young adults living in warm, dry climates. It is an allergic disorder in which IgE &…
Cornea is a transparent, avascular, aspheric structure of the eye-ball.It is centrally steep and peripherally flat.It consists of 1/6th of the fibrous coat of the eyeball. Some amount of vascularization…
Suppression is derived from the latin word “supressus” which is the perfect passive participle of “supprimo”, meaning to “press down”, “press under” or “hold back”. Suppression of an eye is a subconscious adaptation…
The extraocular muscles are a group of six muscles located around the eye, working in perfect harmony to control its movement. These muscles are named based on their location and…
Schematic eye is a model that represents the optical features of the eye. DEFINITION: The construction of the image by ray diagram is not possible by the actual dynamic process,…