Ophthalmology

Symptoms and Warning Signs

At a Glance

Limbal Stem Cell Deficiency (LSCD) causes the tissue from the white of the eye to grow over the clear cornea. Early symptoms include a gritty feeling, light sensitivity, and blurry vision, which can progress to severe pain and vision loss. It is frequently misdiagnosed as dry eye.

Limbal Stem Cell Deficiency (LSCD) is more than just “dry eye.” It is a condition where the “border guards” of your eye—the limbal stem cells—can no longer maintain the clear window of the eye, called the cornea ^[1]. When these cells fail, the skin-like tissue from the white of your eye (the conjunctiva) begins to crawl over the clear cornea, leading to pain and vision loss ^[2]^[3].

How Symptoms Evolve

The symptoms of LSCD often change as the condition progresses. While early signs might feel like standard irritation, late-stage symptoms can be life-altering.

Early Warning Signs

In the beginning, you may experience:

Chronic Irritation: A persistent “gritty” feeling as if something is stuck in your eye ^[4].
Mild Photophobia: An unusual sensitivity to light that makes you want to squint or wear sunglasses indoors ^[5].
Occasional Redness: The eye may appear bloodshot periodically, especially after reading or screen time ^[6].
Fluctuating Vision: Your vision might be clear one moment and blurry the next due to tear film instability on the damaged surface, often temporarily improving with eye drops ^[5].

Intermediate and Late-Stage Symptoms

As the stem cell population depletes further, the surface of the eye becomes more unstable:

Conjunctivalization: This is the hallmark of LSCD. The conjunctiva (the thin, vascular membrane over the white of the eye) grows onto the cornea ^[2]. This causes the eye surface to look hazy or “fleshy” rather than clear and shiny ^[3].
Severe Pain: As the corneal surface breaks down, it can cause recurrent epithelial defects—essentially open sores on the eye that are extremely painful ^[7]^[3].
Profound Vision Loss: As the cornea becomes scarred and covered in opaque tissue (corneal haze), vision may drop significantly ^[3]^[8].
Corneal Neovascularization: New, abnormal blood vessels grow into the clear cornea, further blocking vision and increasing the risk of inflammation ^[2]^[9].

Partial vs. Total LSCD

Doctors often categorize the condition based on how much of the “limbus” (the ring around your cornea) is affected.

Partial LSCD: Some healthy stem cells remain ^[10]. Symptoms may be localized to one part of the eye, and vision may still be relatively good in the center ^[7].
Total LSCD: The entire circumference of the limbus is damaged ^[7]. This usually results in much more severe symptoms, including chronic pain and a complete loss of corneal clarity ^[3].

The Challenge of Misdiagnosis

Because the early symptoms of LSCD look like many other eye problems, patients are often misdiagnosed. It is common for LSCD to be mistaken for:

Severe Dry Eye Disease: While dry eye often happens alongside LSCD, standard dry eye treatments (like basic artificial tears) will not fix the underlying stem cell loss ^[11].
Pseudo-LSCD: Often caused by contact lens overwear, this can mimic the appearance of LSCD. In some cases, stopping contact lens use can reverse these changes, whereas true LSCD is a permanent loss of cells ^[12]^[13].
Neurotrophic Keratopathy: A condition where the eye loses sensation. LSCD often causes a similar loss of feeling as it worsens ^[14]^[15].
Ocular Surface Squamous Neoplasia (OSSN): A type of surface growth that can look like the hazy tissue of LSCD but requires very different treatment ^[16].

Clinical Staging

Medical professionals use a specific staging system to track the disease:

Stage	Description
Stage I	The central 5 mm of the cornea is still clear and unaffected ^[17].
Stage II	The hazy tissue has moved into the central 5 mm area ^[17].
Stage III	The entire corneal surface is covered by abnormal tissue ^[17].

Advanced imaging like In Vivo Confocal Microscopy (IVCM) can sometimes find “hidden” healthy cells even when an eye looks like it has Stage III disease, which can change your treatment plan ^[18]^[10].

Common questions in this guide

What are the early warning signs of limbal stem cell deficiency?

Early signs of LSCD often include a persistent gritty feeling in the eye, sensitivity to light, occasional redness, and blurry vision that might temporarily improve with eye drops. These early symptoms are easily mistaken for severe dry eye.

What does conjunctivalization mean?

Conjunctivalization is the hallmark sign of LSCD. It happens when the skin-like tissue from the white of your eye (the conjunctiva) grows onto the clear cornea, causing the surface of your eye to look hazy and fleshy.

Can contact lenses cause symptoms similar to LSCD?

Yes, wearing contact lenses too much can cause a condition called pseudo-LSCD. This mimics the appearance of true limbal stem cell deficiency, but stopping contact lens use can sometimes reverse the changes, whereas true LSCD causes permanent cell loss.

What is the difference between partial and total LSCD?

In partial LSCD, some healthy stem cells still remain in the eye, and vision may still be relatively clear in the center. Total LSCD means all the stem cells around the cornea are damaged, usually leading to more severe pain and profound vision loss.

How do doctors determine the stage of my LSCD?

Doctors stage LSCD based on how much of the clear cornea is covered by abnormal tissue. In Stage I, the center of the cornea remains clear, while in Stage III, the entire corneal surface is covered by hazy tissue.

Curated prompts to bring to your next appointment.

1.Based on my clinical examination, what stage is my LSCD (Stage I, II, or III)?
2.Do I have partial or total LSCD, and how does that impact my treatment options?
3.Has the conjunctiva started to grow onto my cornea (conjunctivalization), and how far has it progressed?
4.Could my symptoms be 'Pseudo-LSCD' from contact lens wear or another condition like severe dry eye?
5.Are there signs of corneal neovascularization (new blood vessel growth) that could affect my long-term vision?

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References (18)

1
[Limbal epithelial stem cell transplantation : Current state and perspectives].
Meller D, Thomasen H
Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft 2017; (114(4)):298-306 doi:10.1007/s00347-017-0462-6.
PMID: 28239777
2
Stability of limbal stem cell deficiency after mechanical and thermal injuries in mice.
Afsharkhamseh N, Movahedan A, Gidfar S, et al.
Experimental eye research 2016; (145()):88-92 doi:10.1016/j.exer.2015.11.012.
PMID: 26607808
3
Ocular toxicity of mustard gas: A concise review.
Fuchs A, Giuliano EA, Sinha NR, Mohan RR
Toxicology letters 2021; (343()):21-27 doi:10.1016/j.toxlet.2021.02.007.
PMID: 33600921
4
A novel case of limbal stem cell deficiency in a patient with acrodermatitis enteropathica.
Sundareswaran G, Arora N, Sankarasubramaniam A
Oman journal of ophthalmology 2023; (16(2)):326-328 doi:10.4103/ojo.ojo_46_22.
PMID: 37602175
5
Multi-parametric evaluation of autologous cultivated Limbal epithelial cell transplantation outcomes of Limbal stem cell deficiency due to chemical burn.
Selver OB, Gurdal M, Yagci A, et al.
BMC ophthalmology 2020; (20(1)):325 doi:10.1186/s12886-020-01588-6.
PMID: 32762738
6
Risk Factors for Development of Limbal Stem Cell Deficiency After Acute Ocular Burns.
Kate A, Rajagopal RN, Sharma S, et al.
Current eye research 2025; (50(7)):668-676 doi:10.1080/02713683.2025.2482059.
PMID: 40147454
7
[Panorama of limbal alterations (French translation of the article)].
Gueudry J, Majo F, Delcampe A, Muraine M
Journal francais d'ophtalmologie 2019; (42(5)):517-528 doi:10.1016/j.jfo.2018.08.016.
PMID: 31005284
8
Corneal irregularity of the anterior and posterior surface in patients with limbal stem cell deficiency evaluated with anterior-segment optical coherence tomography.
Goto H, Ono T, Taketani Y, et al.
Japanese journal of ophthalmology 2025; (69(5)):708-716 doi:10.1007/s10384-025-01242-y.
PMID: 40690095
9
In vivo confocal microscopy and optical coherence tomography as innovative tools for the diagnosis of limbal stem cell deficiency.
Banayan N, Georgeon C, Grieve K, et al.
Journal francais d'ophtalmologie 2018; (41(9)):e395-e406 doi:10.1016/j.jfo.2018.09.003.
PMID: 30458924
10
Existence of Normal Limbal Epithelium in Eyes With Clinical Signs of Total Limbal Stem Cell Deficiency.
Chan E, Le Q, Codriansky A, et al.
Cornea 2016; (35(11)):1483-1487 doi:10.1097/ICO.0000000000000914.
PMID: 27362882
11
Vision Rehabilitation with a Native Pintucci-type Keratoprosthesis.
Rahmani S, Bagheri A, Karimian F, et al.
Journal of ophthalmic & vision research 2019; (14(1)):101-104 doi:10.4103/jovr.jovr_52_17.
PMID: 30820295
12
Limbal Stem Cell Transplantation for Soft Contact Lens Wear-Related Limbal Stem Cell Deficiency.
Shen C, Chan CC, Holland EJ
American journal of ophthalmology 2015; (160(6)):1142-1149.e1.
PMID: 26299533
13
Evaluation of Medically Reversible Limbal Stem Cell Deficiency.
Korkmaz İ, Eratılgan NF, Palamar M, et al.
Turkish journal of ophthalmology 2024; (54(5)):251-256 doi:10.4274/tjo.galenos.2024.69705.
PMID: 39463138
14
Co-existence of Neurotrophic Keratopathy in Eyes With Limbal Stem Cell Deficiency.
Niruthisard D, Bonnet C, Fung SSM, et al.
American journal of ophthalmology 2024; (267()):249-256 doi:10.1016/j.ajo.2024.06.022.
PMID: 38945348
15
Epithelial Thinning in Limbal Stem Cell Deficiency.
Chan EH, Chen L, Yu F, Deng SX
American journal of ophthalmology 2015; (160(4)):669-77.e4.
PMID: 26163009
16
Corneal squamous neoplasia: masquerades and management outcomes at a rural eyecare centre.
Agarwal A, Kaliki S, Murthy SI
BMJ case reports 2023; (16(5)) doi:10.1136/bcr-2022-254365.
PMID: 37130635
17
Severity Classification of Limbal Stem Cell Failure Due to Steven Johnson Syndrome in the Light of the Classification Consensus of Limbal Stem Cell Deficiency.
Akgun Z, Palamar M, Egrilmez S, et al.
Eye & contact lens 2024; (50(4)):159-162 doi:10.1097/ICL.0000000000001073.
PMID: 38305421
18
Limbal Epithelial Cells Detected in Stage III Limbal Stem Cell Deficiency by Multimodal Anterior Segment Imaging.
Bonnet C, Maalhaghfard M, Deng SX
American journal of ophthalmology 2026; (283()):91-99 doi:10.1016/j.ajo.2025.11.041.
PMID: 41338407

This page provides educational information about LSCD symptoms and clinical stages. It does not replace professional medical advice or a formal diagnosis from an ophthalmologist or eye care specialist.

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