A nurse is assessing a 58-year-old client who has been diagnosed with ocular melanoma. Which assessment finding would be most concerning and require immediate attention?

Sudden onset of flashing lights and floaters indicates possible retinal detachment, a serious complication of ocular melanoma requiring immediate intervention to prevent permanent vision loss. Other findings are less urgent or expected in the disease course.

Understanding the Clinical Priority
The question asks you to identify the most concerning finding in a client with ocular melanoma that requires immediate attention. This is a classic NCLEX-RN prioritization question. To answer correctly, you must differentiate between expected chronic disease manifestations and acute complications that threaten vision or signal dangerous disease progression. The key is to apply the nursing principle of Airway, Breathing, Circulation (ABCs) and safety, which in ocular emergencies extends to the immediate risk of permanent vision loss.

Analysis of the Correct Answer: Option 2
Sudden onset of flashing lights (photopsia) and floaters is the most concerning finding. This symptom cluster is a classic presentation of a rhegmatogenous retinal detachment (RRD) or significant vitreous hemorrhage.

The underlying pathophysiology connects directly to the client's diagnosis of ocular melanoma. A choroidal melanoma or nevus can create a mechanical and metabolic disturbance in the overlying retina. As the tumor grows, it can cause the overlying retinal pigment epithelium and neurosensory retina to degenerate and become friable. This process can lead to the formation of a retinal tear over the tumor. Once a full-thickness retinal break occurs, liquefied vitreous can seep into the subretinal space, rapidly causing a retinal detachment. This mechanism is directly supported by evidence describing a retinal tear and subsequent RRD originating directly over a choroidal nevus ^[2]. Similarly, vitreous metastasis from a distant primary melanoma can present as new floaters and blurred vision, mimicking inflammation but representing a serious intraocular spread of malignancy ^[1]. A sudden shower of floaters may also indicate bleeding into the vitreous from fragile tumor vessels, a finding associated with significant vision loss ^[4]. This acute change requires an immediate, stat ophthalmology referral to prevent irreversible vision loss, making it the highest priority.

Analysis of Incorrect Options

Option 1: Complaint of mild eye fatigue after reading.
Eye fatigue, or asthenopia, is a nonspecific and generally benign symptom. In the context of a known ocular tumor, it does not signal an acute, vision-threatening event or a life-threatening complication. While it should be noted and monitored, it is an expected, chronic symptom that does not require immediate intervention. This is the lowest priority option.

Option 3: Gradual decrease in peripheral vision over several months.
A gradual decrease in peripheral vision is a common and expected finding with a growing ocular melanoma. As the tumor mass expands within the globe, it can mechanically compress or directly invade the retina, leading to a progressive visual field defect. Alternatively, an exudative retinal detachment, where fluid leaks from the tumor and accumulates under the retina without a break, can also cause a slow, progressive vision loss. While this finding is clinically significant and indicates tumor progression requiring treatment planning, its chronic and gradual nature means it is not an emergency that requires immediate, stat attention in the same way an acute RRD does.

Option 4: Presence of a small, pigmented lesion on the iris.
A pigmented iris lesion is a clinical sign that may be part of the initial presentation or a monitored characteristic of the disease. It represents the primary tumor itself or a new finding to be documented and evaluated. However, the mere presence of a stable, small lesion does not constitute an acute emergency. The priority is the acute functional change—the sudden onset of symptoms—that signals a structural complication like a tear or detachment.

NCLEX-RN Clinical Judgment Takeaway
For a client with an intraocular malignancy, your nursing surveillance must focus on detecting acute complications. The sudden onset of visual phenomena like flashes and floaters is the "red flag" that differentiates a stable tumor from a surgical emergency. This aligns with the NCLEX focus on recognizing acute versus chronic findings and prioritizing care based on the risk of immediate and permanent sensory loss. The evidence confirms that these acute symptoms can represent a mechanical retinal break over a nevus ^[2], malignant infiltration of the vitreous ^[1], or hemorrhagic metastasis ^[4], all of which demand urgent intervention.