Eye surgery can be performed for various reasons, depending on the specific condition or issue affecting the eye. Here are a few common types of eye surgeries and their purposes:

1. Cataract Surgery: Cataract surgery is performed to treat cataracts, which are the clouding of the eye’s natural lens. During the procedure, the cloudy lens is removed and replaced with an artificial lens (intraocular lens) to restore clear vision.
2. LASIK or Refractive Surgery: LASIK (Laser-Assisted in Situ Keratomileusis) and other refractive surgeries are performed to correct refractive errors such as nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. These surgeries reshape the cornea using laser technology to improve the eye’s focusing ability and reduce the need for glasses or contact lenses.
3. Glaucoma Surgery: Glaucoma surgeries are aimed at treating glaucoma, a group of eye conditions that damage the optic nerve, often due to increased pressure within the eye. The goal of glaucoma surgery is to reduce intraocular pressure and prevent further damage to the optic nerve.
4. Retinal Surgery: Retinal surgery is performed to treat various retinal conditions such as retinal detachment, macular degeneration, diabetic retinopathy, or other retinal disorders. The surgery may involve repairing a detached retina, removing scar tissue, or placing medication directly into the eye.
5. Corneal Transplant: Corneal transplant, also known as keratoplasty, involves replacing a damaged or diseased cornea with a healthy donor cornea. This procedure is typically performed to improve vision and alleviate corneal conditions such as corneal scarring, thinning, or dystrophies.
6. Strabismus Surgery: Strabismus surgery is performed to correct misalignment of the eyes, commonly known as crossed or wandering eyes. The surgery adjusts the eye muscles to align the eyes properly and improve binocular vision.

These are just a few examples of the many types of eye surgeries available. The specific surgery recommended depends on the diagnosis made by an eye care professional after a thorough examination of the individual’s eye condition.