Assalam-0-alaikum

How are you all steemians? I hope you all steemians will be safe and sound by the grace of Allah Almighty and I'm fine too Alhamdulillah. Today I am here to share my participation in the contest organized by @sahar78.

Sharing my general knowledge

Laptop was first invented in which year?

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The first computer device was introduced in the of 1970s and the term of laptop is often related to the portable computers and which is small can be carried in a lap and therefore it is named as the laptop.
The earliest device which had resemblance to a laptop was invented in the year of 1981. The Osborne 1 introduced by Adam Osborne and it called as the first computer. It had a weight of about 11.1 kilograms and with a screen of 5 inches. This computer was not lightweight as compared to the today's.

The term laptop was applied in the mid year od 1980s . Grid compass was introduced and which often term as the first laptop. It had a lightweight body, and a flat screen.

Concept of near sightedness?

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The nearsightedness is also called as the myopia it is common error of the eyes that affects the particular portion of the population. The near sightedness occurs when the cornea becomes longer than the normal size or when the eyeball changes in its shape.The rays of the light when enter the eyes do not focus on the retina. This case develops in the adolescents or in the children and increases with the increasing age.

SYMPTOMS

• Blurred vision
• Eye strain
• Headache
• Squinting
• Difficulty in the class while looking at the board

DIAGNOSIS

• Eye examination
• Measurement of the cornea curvature
• overall health examination of the eye

Concept of far sightedness?

It is also called as hyperopia it is also a common refractive problem of the eyes. In this eyes error the objects which are on the distance can be seen clearly than the closest objects. This conditions occurs as a result of the small size of the eye ball and the curvature of the cornea is too little. When the light enters the is not focused on the retina directly. The point of focus falls back the retina and results in the blurred vision for the closest objects and the objects which are present in the distance appear clear.

SYMPTOMS

The symptoms of the far sightedness in the different individuals vary.

• Headache
• Blurred vision
• Difficulty on focusing the closest objects

DIAGNOSIS

• Eyes examination by ophthalmologist
• Tests to measure the eyes focus
• Assessment of overall health of eyes
• Phoropter tests

MY INVITATION
@malikusman1
@stef1
@xkool24

Thank you all for reading my post.