Common Causes of Ptosis: Why Do Eyelids Droop?

Ptosis, also known as blepharoptosis, is a condition where the upper eyelid droops lower than it should. While some people experience mild sagging, others may notice the eyelid covering part of the pupil, which can interfere with vision and affect overall facial appearance. Understanding the causes of ptosis can help you recognize when it’s just a cosmetic concern and when it may signal a deeper medical issue.

Kirk Eye Center has been trusted to provide comprehensive ophthalmology and optometry services in the region since 1991, offering advanced care for conditions like ptosis and other eye disorders. Led by Board-Certified Ophthalmologist Dr. John Kirk, a Colorado native and early adopter of leading treatments, the practice delivers state-of-the-art solutions for medical eye conditions.

Age-Related Muscle Weakness

One of the most common causes of ptosis is the natural aging process. As we get older, the levator muscle, which lifts the upper eyelid, begins to weaken or stretch. This condition, known as involutional ptosis, often develops gradually and typically affects both eyes. Though it may seem purely cosmetic, severe cases can impair vision and may require correction.

Congenital Ptosis

Some are born with ptosis due to an underdeveloped levator muscle. This form, known as congenital ptosis, is usually noticeable at birth or shortly after. Children with congenital ptosis may need early treatment to prevent vision problems such as amblyopia (lazy eye) or astigmatism.

Nerve-Related Causes

Ptosis can also occur when the nerves that control the eyelid muscles are affected. Conditions such as Horner syndrome, third cranial nerve palsy, or neuromuscular disorders, such as myasthenia gravis, can interfere with proper eyelid function. In these cases, ptosis may present suddenly and is often accompanied by other symptoms, making prompt medical evaluation crucial.

Trauma or Injury

Injury to the eye or eyelid can damage the levator muscle or surrounding tissues, leading to drooping. This can occur from direct impact, surgery, or even long-term use of contact lenses, which may overstretch the eyelid structures.

Underlying Medical Conditions

In some cases, ptosis may be linked to systemic conditions, including diabetes, stroke, or tumors that press on nearby nerves or tissues. When ptosis appears suddenly or affects only one eye, it’s important to seek immediate medical care to rule out serious causes.

Get Treatment for Droopy Eyes in Loveland, CO

Ptosis is a condition with a wide range of potential causes. Whether gradual or sudden, seek professional evaluation and explore treatment options. Call us today at 970-669-1107 to schedule a consultation.