Note that the rate of secondary nucleation is proportional to the mass of aggregates, defined as 
  
    
      
        M
        (
        t
        )
        =
        
          ∑
          
            j
            =
            
              n
              
                1
              
            
          
          
            ∞
          
        
        j
        f
        (
        t
        ,
        j
        )
      
    
    {\displaystyle M(t)=\sum _{j=n_{1}}^{\infty }jf(t,j)}
  .
Ocular MALT lymphomas may also be associated with Chlamydia psittaci, although whether or not this is the case is still debated.Follicular lymphoma, diffuse large B cell lymphoma, mantle cell lymphoma, B-cell chronic lymphocytic leukemia, peripheral T-cell lymphoma, and natural killer cell lymphoma have also been reported to affect the orbit. Diagnosis
Classification
There are two types of ocular lymphomas: intraocular lymphomas and adnexal lymphomas. An intraocular lymphoma occurs within the eye, while an adnexal lymphoma occurs outside, but adjoined to the eye. Treatment
Radiotherapy is the most effective treatment for local disease either as the sole treatment for low-grade lymphoma or in combination with chemotherapy for intermediate- and high-grade lymphoma. Radiotherapy dose in range of 30-45 Gy administered in fractions are advised in treating the local orbital lymphomas. Epidemiology
Orbital lymphoma accounts for 55% of malignant orbital tumors in adults. In one study, this was 10% of patients presenting with orbital tumors or similar lesions. Orbital lymphoma is more prevalent in Asia and Europe than in the United States.Although intraocular lymphoma is rare, the number of cases per year is rising, affecting mainly people in their seventies and immunocompromised patients. A recent study has shown that ocular lymphoma is more prevalent in women than men.The survival rate is approximately 60% after 5 years. References


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