4- REFRACTIVE ERRORS

Front

Cause of hyperopia

Back

The eyeball is short (front to back)

Front

A common symptom of myopia

Back

Difficulty seeing distant objects clearly

Front

Normal Eye Focus

Back

A single focal point on the retina results in a clear image.

Front

Cornea Shape in Normal Eye

Back

The cornea or lens surface is curved equally.

Front

Cornea Shape in Astigmatism

Back

The cornea or lens surface is not curved equally.

Front

Myopic Astigmatism

Back

A type of astigmatism where light focuses in front of the retina.

Front

Light focused behind the retina

Back

Known as hyperopia, associated with presbyopia

Front

Difficulty reading and seeing objects

Back

A common clinical manifestation indicating potential vision problems.

Front

Clinical manifestation

Back

Observable signs and symptoms of a condition or disease.

Front

Photorefractive keratotomy (PRK)

Back

Use of laser technology to reshape the cornea.