• Users Online: 31266
  • Home
  • Print this page
  • Email this page

   Table of Contents      
LETTER TO THE EDITOR
Year : 2021  |  Volume : 69  |  Issue : 4  |  Page : 997-998

Slit-lamp mounted anti fogging fan


Vitreoretina Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India

Date of Web Publication16-Mar-2021

Correspondence Address:
Dr. Sourav Damodaran
Fellow,VR Services, Aravind Eye Hospital, Anna Nagar, Madurai 625 020, Tamil Nadu
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_2957_20

Rights and Permissions

How to cite this article:
Damodaran S, Sen S, Babu N. Slit-lamp mounted anti fogging fan. Indian J Ophthalmol 2021;69:997-8

How to cite this URL:
Damodaran S, Sen S, Babu N. Slit-lamp mounted anti fogging fan. Indian J Ophthalmol [serial online] 2021 [cited 2024 Mar 29];69:997-8. Available from: https://journals.lww.com/ijo/pages/default.aspx/text.asp?2021/69/4/997/311240



Dear Editor,

Fogging of lenses during retinal laser procedures has been a problem dealt by ophthalmologists for a long time. This problem got aggravated since the advent of COVID-19 as patients started wearing masks for personal protection.[1] Lens fogging critically reduces the fundus view and hampers the efficiency of lasers [Figure 1]a. Lot of methods, such as using an antifog spray and making patients to wear antifog-band, have been used to curb this menace.[2] A fan with flow directed to the lens works well by removing the moisture/fogging.
Figure 1: (a) Misting on the lens surface due to patient breathing. (b) Motor with propeller and power cell. (c) Side view of the fan mounted on slit lamp. (d) Front view-fan does not obstruct the viewing pathway. (e) Laser performed with fan running. (f) De-misted lens surface

Click here to view


Here we describe a fan that can help in reducing lens fogging by directed wind flow. The motor with the propeller is obtained from a mini drone. It is a 7-mm diameter, 16-mm length micro-coreless motor working on 3 V DC with 48,000 RPM [Figure 1]b. This motor is mounted along with a DC battery over the slit lamp on the front part of the viewing beam [Figure 1]c and [Figure 1]d. The fan is activated while the laser is being performed [Figure 1]e. It immediately clears of any water condensation occurring in the front part of the contact laser lens [Figure 1]f.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
  References Top

1.
Lawrentschuk N, Fleshner NE, Bolton DM. Laparoscopic lens fogging: A review of etiology and methods to maintain a clear visual field. J Endourol 2010;24:905-13.  Back to cited text no. 1
    
2.
Song T, Lee DH. A randomized comparison of laparoscopic LEns defogging using anti-fog solution, waRm saline, and chlorhexidine solution (CLEAR). Surg Endosc 2020;34:940-5.  Back to cited text no. 2
    


    Figures

  [Figure 1]


This article has been cited by
1 Polyvivyl chloride deflector: A simple way to reduce slit-lamp lens fogging
Sourav Damodaran, Chitaranjan Mishra, Naresh Babu
Indian Journal of Ophthalmology. 2021; 69(10): 2883
[Pubmed] | [DOI]



 

Top
 
 
  Search
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

 
  In this article
References
Article Figures

 Article Access Statistics
    Viewed5337    
    Printed46    
    Emailed0    
    PDF Downloaded105    
    Comments [Add]    
    Cited by others 1    

Recommend this journal